56666007 has 8 divisors (see below), whose sum is σ = 83949680. Its totient is φ = 37777320.

The previous prime is 56665993. The next prime is 56666017. The reversal of 56666007 is 70066665.

It is not a de Polignac number, because 56666007 - 2⁶ = 56665943 is a prime.

It is a super-2 number, since 2×56666007² = 6422072698648098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56666017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1049344 + ... + 1049397.

It is an arithmetic number, because the mean of its divisors is an integer number (10493710).

Almost surely, 2^56666007 is an apocalyptic number.

56666007 is a deficient number, since it is larger than the sum of its proper divisors (27283673).

56666007 is a wasteful number, since it uses less digits than its factorization.

56666007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098750 (or 2098744 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 56666007 is about 7527.6827111668. The cubic root of 56666007 is about 384.0969603786.

The spelling of 56666007 in words is "fifty-six million, six hundred sixty-six thousand, seven".