56780969 has 16 divisors (see below), whose sum is σ = 69019776. Its totient is φ = 45600000.

The previous prime is 56780963. The next prime is 56781001. The reversal of 56780969 is 96908765.

It is a cyclic number.

It is not a de Polignac number, because 56780969 - 2²⁴ = 40003753 is a prime.

It is a super-2 number, since 2×56780969² = 6448156881157922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56780963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28919 + ... + 30819.

It is an arithmetic number, because the mean of its divisors is an integer number (4313736).

Almost surely, 2^56780969 is an apocalyptic number.

It is an amenable number.

56780969 is a deficient number, since it is larger than the sum of its proper divisors (12238807).

56780969 is a wasteful number, since it uses less digits than its factorization.

56780969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 56780969 is about 7535.3147910356. The cubic root of 56780969 is about 384.3565323844.

The spelling of 56780969 in words is "fifty-six million, seven hundred eighty thousand, nine hundred sixty-nine".