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10689937 = 15237019
BaseRepresentation
bin101000110001…
…110110010001
3202010002211121
4220301312101
510214034222
61021042241
7156601666
oct50616621
922102747
1010689937
116041565
1236b6381
1322a390b
1415c3a6d
15e125c7
hexa31d91

10689937 has 4 divisors (see below), whose sum is σ = 10698480. Its totient is φ = 10681396.

The previous prime is 10689911. The next prime is 10689961. The reversal of 10689937 is 73998601.

10689937 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 73998601 = 580712743.

It is a cyclic number.

It is not a de Polignac number, because 10689937 - 211 = 10687889 is a prime.

It is a super-2 number, since 2×106899372 = 228549506127938, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10689893 and 10689902.

It is not an unprimeable number, because it can be changed into a prime (10689907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1987 + ... + 5032.

It is an arithmetic number, because the mean of its divisors is an integer number (2674620).

Almost surely, 210689937 is an apocalyptic number.

It is an amenable number.

10689937 is a deficient number, since it is larger than the sum of its proper divisors (8543).

10689937 is an equidigital number, since it uses as much as digits as its factorization.

10689937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8542.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 10689937 is about 3269.5469105061. The cubic root of 10689937 is about 220.2884439673.

The spelling of 10689937 in words is "ten million, six hundred eighty-nine thousand, nine hundred thirty-seven".

Divisors: 1 1523 7019 10689937