56700009 has 12 divisors (see below), whose sum is σ = 86210800. Its totient is φ = 35810424.

The previous prime is 56699989. The next prime is 56700011. The reversal of 56700009 is 90000765.

It is not a de Polignac number, because 56700009 - 2¹⁵ = 56667241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56700019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165619 + ... + 165960.

Almost surely, 2^56700009 is an apocalyptic number.

It is an amenable number.

56700009 is a deficient number, since it is larger than the sum of its proper divisors (29510791).

56700009 is a wasteful number, since it uses less digits than its factorization.

56700009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331604 (or 331601 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 56700009 is about 7529.9408364210. The cubic root of 56700009 is about 384.1737698229.

The spelling of 56700009 in words is "fifty-six million, seven hundred thousand, nine".