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10691105 = 52138221
BaseRepresentation
bin101000110010…
…001000100001
3202010011102212
4220302020201
510214103410
61021051505
7156605255
oct50621041
922104385
1010691105
116042427
1236b6b95
1322a42c9
1415c4265
15e12b05
hexa32221

10691105 has 4 divisors (see below), whose sum is σ = 12829332. Its totient is φ = 8552880.

The previous prime is 10691101. The next prime is 10691117. The reversal of 10691105 is 50119601.

10691105 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.

It can be written as a sum of positive squares in 2 ways, for example, as 7349521 + 3341584 = 2711^2 + 1828^2 .

It is not a de Polignac number, because 10691105 - 22 = 10691101 is a prime.

It is a super-2 number, since 2×106911052 = 228599452242050, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (10691101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1069106 + ... + 1069115.

It is an arithmetic number, because the mean of its divisors is an integer number (3207333).

Almost surely, 210691105 is an apocalyptic number.

It is an amenable number.

10691105 is a deficient number, since it is larger than the sum of its proper divisors (2138227).

10691105 is an equidigital number, since it uses as much as digits as its factorization.

10691105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138226.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 10691105 is about 3269.7255236487. The cubic root of 10691105 is about 220.2964667003.

The spelling of 10691105 in words is "ten million, six hundred ninety-one thousand, one hundred five".

Divisors: 1 5 2138221 10691105