56666788 has 24 divisors (see below), whose sum is σ = 100624608. Its totient is φ = 27920256.

The previous prime is 56666773. The next prime is 56666803. The reversal of 56666788 is 88766665.

It is an interprime number because it is at equal distance from previous prime (56666773) and next prime (56666803).

It is a super-2 number, since 2×56666788² = 6422249724473888, which contains 22 as substring.

It is a plaindrome in base 10.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 127695 + ... + 128137.

It is an arithmetic number, because the mean of its divisors is an integer number (4192692).

Almost surely, 2^56666788 is an apocalyptic number.

It is an amenable number.

56666788 is a deficient number, since it is larger than the sum of its proper divisors (43957820).

56666788 is a wasteful number, since it uses less digits than its factorization.

56666788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843 (or 841 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 52.

The square root of 56666788 is about 7527.7345861820. The cubic root of 56666788 is about 384.0987249777.

The spelling of 56666788 in words is "fifty-six million, six hundred sixty-six thousand, seven hundred eighty-eight".