56688668 has 12 divisors (see below), whose sum is σ = 100401000. Its totient is φ = 28002672.

The previous prime is 56688637. The next prime is 56688673. The reversal of 56688668 is 86688665.

It is a super-2 number, since 2×56688668² = 6427210159228448, which contains 22 as substring.

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, 85043 + ... + 85706.

It is an arithmetic number, because the mean of its divisors is an integer number (8366750).

Almost surely, 2^56688668 is an apocalyptic number.

It is an amenable number.

56688668 is a deficient number, since it is larger than the sum of its proper divisors (43712332).

56688668 is a wasteful number, since it uses less digits than its factorization.

56688668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170836 (or 170834 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 53.

The square root of 56688668 is about 7529.1877383952. The cubic root of 56688668 is about 384.1481542759.

The spelling of 56688668 in words is "fifty-six million, six hundred eighty-eight thousand, six hundred sixty-eight".