56666416 has 10 divisors (see below), whose sum is σ = 109791212. Its totient is φ = 28333200.

The previous prime is 56666413. The next prime is 56666429. The reversal of 56666416 is 61466665.

It is a super-2 number, since 2×56666416² = 6422165404570112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56666413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1770810 + ... + 1770841.

Almost surely, 2^56666416 is an apocalyptic number.

It is an amenable number.

56666416 is a deficient number, since it is larger than the sum of its proper divisors (53124796).

56666416 is a wasteful number, since it uses less digits than its factorization.

56666416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3541659 (or 3541653 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 56666416 is about 7527.7098775125. The cubic root of 56666416 is about 384.0978844793.

The spelling of 56666416 in words is "fifty-six million, six hundred sixty-six thousand, four hundred sixteen".