56731966 has 8 divisors (see below), whose sum is σ = 85544064. Its totient is φ = 28217280.

The previous prime is 56731963. The next prime is 56731973. The reversal of 56731966 is 66913765.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56731963) 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, 73875 + ... + 74638.

It is an arithmetic number, because the mean of its divisors is an integer number (10693008).

Almost surely, 2^56731966 is an apocalyptic number.

56731966 is a deficient number, since it is larger than the sum of its proper divisors (28812098).

56731966 is a wasteful number, since it uses less digits than its factorization.

56731966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148706.

The product of its digits is 204120, while the sum is 43.

The square root of 56731966 is about 7532.0625329321. The cubic root of 56731966 is about 384.2459316890.

The spelling of 56731966 in words is "fifty-six million, seven hundred thirty-one thousand, nine hundred sixty-six".