656960 has 28 divisors (see below), whose sum is σ = 1565148. Its totient is φ = 262656.

The previous prime is 656959. The next prime is 656977. The reversal of 656960 is 69656.

It can be written as a sum of positive squares in 2 ways, for example, as 287296 + 369664 = 536^2 + 608^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 656960.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707 + ... + 1346.

2⁶⁵⁶⁹⁶⁰ is an apocalyptic number.

It is an amenable number.

656960 is an abundant number, since it is smaller than the sum of its proper divisors (908188).

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

656960 is a wasteful number, since it uses less digits than its factorization.

656960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070 (or 2060 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 656960 is about 810.5306903505. The cubic root of 656960 is about 86.9319942417.

The spelling of 656960 in words is "six hundred fifty-six thousand, nine hundred sixty".