890656 has 24 divisors (see below), whose sum is σ = 1889244. Its totient is φ = 410880.

The previous prime is 890653. The next prime is 890657. The reversal of 890656 is 656098.

It can be written as a sum of positive squares in 2 ways, for example, as 883600 + 7056 = 940^2 + 84^2 .

It is a super-2 number, since 2×890656² = 1586536220672, which contains 22 as substring.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (890653) 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, 655 + ... + 1486.

2⁸⁹⁰⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

890656 is an abundant number, since it is smaller than the sum of its proper divisors (998588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

890656 is a wasteful number, since it uses less digits than its factorization.

890656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164 (or 2156 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 890656 is about 943.7457284672. The cubic root of 890656 is about 96.2136445594.

The spelling of 890656 in words is "eight hundred ninety thousand, six hundred fifty-six".