56661782 has 8 divisors (see below), whose sum is σ = 89992296. Its totient is φ = 26664352.

The previous prime is 56661779. The next prime is 56661791. The reversal of 56661782 is 28716665.

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, 833228 + ... + 833295.

It is an arithmetic number, because the mean of its divisors is an integer number (11249037).

Almost surely, 2^56661782 is an apocalyptic number.

56661782 is a deficient number, since it is larger than the sum of its proper divisors (33330514).

56661782 is a wasteful number, since it uses less digits than its factorization.

56661782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666542.

The product of its digits is 120960, while the sum is 41.

The square root of 56661782 is about 7527.4020750854. The cubic root of 56661782 is about 384.0874140911.

The spelling of 56661782 in words is "fifty-six million, six hundred sixty-one thousand, seven hundred eighty-two".