10656889 has 4 divisors (see below), whose sum is σ = 11120256. Its totient is φ = 10193524.

The previous prime is 10656859. The next prime is 10656907. The reversal of 10656889 is 98865601.

10656889 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 10656889 - 2⁵ = 10656857 is a prime.

It is a super-2 number, since 2×10656889² = 227138566316642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10656829) 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, 231649 + ... + 231694.

It is an arithmetic number, because the mean of its divisors is an integer number (2780064).

Almost surely, 2^10656889 is an apocalyptic number.

It is an amenable number.

10656889 is a deficient number, since it is larger than the sum of its proper divisors (463367).

10656889 is an equidigital number, since it uses as much as digits as its factorization.

10656889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463366.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 10656889 is about 3264.4890871314. The cubic root of 10656889 is about 220.0612019809.

The spelling of 10656889 in words is "ten million, six hundred fifty-six thousand, eight hundred eighty-nine".