56666064 has 80 divisors (see below), whose sum is σ = 180182912. Its totient is φ = 14943744.

The previous prime is 56666053. The next prime is 56666081. The reversal of 56666064 is 46066665.

It is a super-2 number, since 2×56666064² = 6422085618504192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2119 + ... + 10854.

Almost surely, 2^56666064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56666064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90091456).

56666064 is an abundant number, since it is smaller than the sum of its proper divisors (123516848).

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

56666064 is a wasteful number, since it uses less digits than its factorization.

56666064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13004 (or 12998 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 56666064 is about 7527.6864971916. The cubic root of 56666064 is about 384.0970891655.

The spelling of 56666064 in words is "fifty-six million, six hundred sixty-six thousand, sixty-four".