10657809 has 12 divisors (see below), whose sum is σ = 16064256. Its totient is φ = 6796152.

The previous prime is 10657807. The next prime is 10657837. The reversal of 10657809 is 90875601.

It is not a de Polignac number, because 10657809 - 2¹ = 10657807 is a prime.

It is a super-2 number, since 2×10657809² = 227177785360962, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (10657807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25537 + ... + 25950.

It is an arithmetic number, because the mean of its divisors is an integer number (1338688).

Almost surely, 2^10657809 is an apocalyptic number.

It is an amenable number.

10657809 is a deficient number, since it is larger than the sum of its proper divisors (5406447).

10657809 is a wasteful number, since it uses less digits than its factorization.

10657809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51516 (or 51513 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 10657809 is about 3264.6299943485. The cubic root of 10657809 is about 220.0675343630.

The spelling of 10657809 in words is "ten million, six hundred fifty-seven thousand, eight hundred nine".