56977966 has 8 divisors (see below), whose sum is σ = 85785480. Its totient is φ = 28382808.

The previous prime is 56977957. The next prime is 56977993. The reversal of 56977966 is 66977965.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52416 + ... + 53491.

It is an arithmetic number, because the mean of its divisors is an integer number (10723185).

Almost surely, 2^56977966 is an apocalyptic number.

56977966 is a deficient number, since it is larger than the sum of its proper divisors (28807514).

56977966 is a wasteful number, since it uses less digits than its factorization.

56977966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106178.

The product of its digits is 4286520, while the sum is 55.

The square root of 56977966 is about 7548.3750569245. The cubic root of 56977966 is about 384.8005173366.

Subtracting 56977966 from its reverse (66977965), we obtain a palindrome (9999999).

The spelling of 56977966 in words is "fifty-six million, nine hundred seventy-seven thousand, nine hundred sixty-six".