56719866 has 16 divisors (see below), whose sum is σ = 129645504. Its totient is φ = 16205664.

The previous prime is 56719847. The next prime is 56719891. The reversal of 56719866 is 66891765.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675195 + ... + 675278.

It is an arithmetic number, because the mean of its divisors is an integer number (8102844).

Almost surely, 2^56719866 is an apocalyptic number.

56719866 is an abundant number, since it is smaller than the sum of its proper divisors (72925638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56719866 is a wasteful number, since it uses less digits than its factorization.

56719866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350485.

The product of its digits is 544320, while the sum is 48.

The square root of 56719866 is about 7531.2592572557. The cubic root of 56719866 is about 384.2186119568.

The spelling of 56719866 in words is "fifty-six million, seven hundred nineteen thousand, eight hundred sixty-six".