56668018 has 8 divisors (see below), whose sum is σ = 92729520. Its totient is φ = 25758180.

The previous prime is 56667983. The next prime is 56668037. The reversal of 56668018 is 81086665.

It is a happy number.

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

It is a super-2 number, since 2×56668018² = 6422528528096648, which contains 22 as substring.

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, 1287888 + ... + 1287931.

It is an arithmetic number, because the mean of its divisors is an integer number (11591190).

Almost surely, 2^56668018 is an apocalyptic number.

56668018 is a deficient number, since it is larger than the sum of its proper divisors (36061502).

56668018 is a wasteful number, since it uses less digits than its factorization.

56668018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575832.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 56668018 is about 7527.8162836244. The cubic root of 56668018 is about 384.1015040189.

The spelling of 56668018 in words is "fifty-six million, six hundred sixty-eight thousand, eighteen".