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60904689 = 320301563
BaseRepresentation
bin1110100001010…
…1010011110001
311020121021112020
43220111103301
5111042422224
610013222053
71336452456
oct350252361
9136537466
1060904689
113141965a
1218491929
13c8059a1
14813582d
155530c79
hex3a154f1

60904689 has 4 divisors (see below), whose sum is σ = 81206256. Its totient is φ = 40603124.

The previous prime is 60904673. The next prime is 60904691. The reversal of 60904689 is 98640906.

60904689 is digitally balanced in base 2, 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.

It is a cyclic number.

It is not a de Polignac number, because 60904689 - 24 = 60904673 is a prime.

It is a super-2 number, since 2×609046892 = 7418762284373442, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 60904689.

It is not an unprimeable number, because it can be changed into a prime (60904289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10150779 + ... + 10150784.

It is an arithmetic number, because the mean of its divisors is an integer number (20301564).

Almost surely, 260904689 is an apocalyptic number.

It is an amenable number.

60904689 is a deficient number, since it is larger than the sum of its proper divisors (20301567).

60904689 is a wasteful number, since it uses less digits than its factorization.

60904689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20301566.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 60904689 is about 7804.1456290871. The cubic root of 60904689 is about 393.4445887682. Note that the first 3 decimals are identical.

The spelling of 60904689 in words is "sixty million, nine hundred four thousand, six hundred eighty-nine".

Divisors: 1 3 20301563 60904689