12900656 has 10 divisors (see below), whose sum is σ = 24995052. Its totient is φ = 6450320.

The previous prime is 12900623. The next prime is 12900661. The reversal of 12900656 is 65600921.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403130 + ... + 403161.

Almost surely, 2^12900656 is an apocalyptic number.

12900656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12900656 is a deficient number, since it is larger than the sum of its proper divisors (12094396).

12900656 is an equidigital number, since it uses as much as digits as its factorization.

12900656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806299 (or 806293 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 12900656 is about 3591.7483208042. The cubic root of 12900656 is about 234.5329852991.

The spelling of 12900656 in words is "twelve million, nine hundred thousand, six hundred fifty-six".