56646507 has 4 divisors (see below), whose sum is σ = 75528680. Its totient is φ = 37764336.

The previous prime is 56646503. The next prime is 56646511. The reversal of 56646507 is 70564665.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (56646503) and next prime (56646511).

It is not a de Polignac number, because 56646507 - 2² = 56646503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56646503) 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, 9441082 + ... + 9441087.

It is an arithmetic number, because the mean of its divisors is an integer number (18882170).

Almost surely, 2^56646507 is an apocalyptic number.

56646507 is a deficient number, since it is larger than the sum of its proper divisors (18882173).

56646507 is a wasteful number, since it uses less digits than its factorization.

56646507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18882172.

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 56646507 is about 7526.3873804103. The cubic root of 56646507 is about 384.0528966302.

The spelling of 56646507 in words is "fifty-six million, six hundred forty-six thousand, five hundred seven".