56666668 has 12 divisors (see below), whose sum is σ = 100847880. Its totient is φ = 27852992.

The previous prime is 56666663. The next prime is 56666671. The reversal of 56666668 is 86666665.

It is a super-2 number, since 2×56666668² = 6422222524444448, which contains 22 as substring.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (56666663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119821 + ... + 120292.

It is an arithmetic number, because the mean of its divisors is an integer number (8403990).

Almost surely, 2^56666668 is an apocalyptic number.

It is an amenable number.

56666668 is a deficient number, since it is larger than the sum of its proper divisors (44181212).

56666668 is a wasteful number, since it uses less digits than its factorization.

56666668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240176 (or 240174 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 49.

The square root of 56666668 is about 7527.7266156523. The cubic root of 56666668 is about 384.0984538496.

The spelling of 56666668 in words is "fifty-six million, six hundred sixty-six thousand, six hundred sixty-eight".