56961766 has 4 divisors (see below), whose sum is σ = 85442652. Its totient is φ = 28480882.

The previous prime is 56961757. The next prime is 56961767. The reversal of 56961766 is 66716965.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56961767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14240440 + ... + 14240443.

It is an arithmetic number, because the mean of its divisors is an integer number (21360663).

Almost surely, 2^56961766 is an apocalyptic number.

56961766 is a deficient number, since it is larger than the sum of its proper divisors (28480886).

56961766 is a wasteful number, since it uses less digits than its factorization.

56961766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28480885.

The product of its digits is 408240, while the sum is 46.

The square root of 56961766 is about 7547.3019020045. The cubic root of 56961766 is about 384.7640449964.

The spelling of 56961766 in words is "fifty-six million, nine hundred sixty-one thousand, seven hundred sixty-six".