56166677 has 4 divisors (see below), whose sum is σ = 64190496. Its totient is φ = 48142860.

The previous prime is 56166661. The next prime is 56166683. The reversal of 56166677 is 77666165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77666165 = 5 ⋅15533233.

It is a cyclic number.

It is not a de Polignac number, because 56166677 - 2⁴ = 56166661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56166277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4011899 + ... + 4011912.

It is an arithmetic number, because the mean of its divisors is an integer number (16047624).

Almost surely, 2^56166677 is an apocalyptic number.

It is an amenable number.

56166677 is a deficient number, since it is larger than the sum of its proper divisors (8023819).

56166677 is an equidigital number, since it uses as much as digits as its factorization.

56166677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8023818.

The product of its digits is 317520, while the sum is 44.

The square root of 56166677 is about 7494.4430747054. The cubic root of 56166677 is about 382.9654339617.

The spelling of 56166677 in words is "fifty-six million, one hundred sixty-six thousand, six hundred seventy-seven".