56666107 has 4 divisors (see below), whose sum is σ = 56788960. Its totient is φ = 56543256.

The previous prime is 56666081. The next prime is 56666111. The reversal of 56666107 is 70166665.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70166665 = 5 ⋅14033333.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56666107 is a prime.

It is a super-2 number, since 2×56666107² = 6422095365070898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56666707) 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, 60732 + ... + 61657.

It is an arithmetic number, because the mean of its divisors is an integer number (14197240).

Almost surely, 2^56666107 is an apocalyptic number.

56666107 is a deficient number, since it is larger than the sum of its proper divisors (122853).

56666107 is a wasteful number, since it uses less digits than its factorization.

56666107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122852.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 56666107 is about 7527.6893533142. The cubic root of 56666107 is about 384.0971863205.

The spelling of 56666107 in words is "fifty-six million, six hundred sixty-six thousand, one hundred seven".