10656909 has 12 divisors (see below), whose sum is σ = 16299036. Its totient is φ = 6686592.

The previous prime is 10656907. The next prime is 10656911. The reversal of 10656909 is 90965601.

It is an interprime number because it is at equal distance from previous prime (10656907) and next prime (10656911).

It can be written as a sum of positive squares in 2 ways, for example, as 9548100 + 1108809 = 3090^2 + 1053^2 .

It is not a de Polignac number, because 10656909 - 2¹ = 10656907 is a prime.

It is a super-2 number, since 2×10656909² = 227139418868562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10656907) 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 11 ways as a sum of consecutive naturals, for example, 34674 + ... + 34979.

It is an arithmetic number, because the mean of its divisors is an integer number (1358253).

Almost surely, 2^10656909 is an apocalyptic number.

It is an amenable number.

10656909 is a deficient number, since it is larger than the sum of its proper divisors (5642127).

10656909 is a wasteful number, since it uses less digits than its factorization.

10656909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69676 (or 69673 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 10656909 is about 3264.4921503964. The cubic root of 10656909 is about 220.0613396452.

The spelling of 10656909 in words is "ten million, six hundred fifty-six thousand, nine hundred nine".