56664178 has 8 divisors (see below), whose sum is σ = 86265072. Its totient is φ = 27909156.

The previous prime is 56664169. The next prime is 56664211. The reversal of 56664178 is 87146665.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 211300 + ... + 211567.

It is an arithmetic number, because the mean of its divisors is an integer number (10783134).

Almost surely, 2^56664178 is an apocalyptic number.

56664178 is a deficient number, since it is larger than the sum of its proper divisors (29600894).

56664178 is a wasteful number, since it uses less digits than its factorization.

56664178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422936.

The product of its digits is 241920, while the sum is 43.

The square root of 56664178 is about 7527.5612252575. The cubic root of 56664178 is about 384.0928278546.

The spelling of 56664178 in words is "fifty-six million, six hundred sixty-four thousand, one hundred seventy-eight".