57406666 has 16 divisors (see below), whose sum is σ = 90019584. Its totient is φ = 27404784.

The previous prime is 57406663. The next prime is 57406669. The reversal of 57406666 is 66660475.

It is an interprime number because it is at equal distance from previous prime (57406663) and next prime (57406669).

57406666 is a modest number, since divided by 6666 gives 5740 as remainder.

It is not an unprimeable number, because it can be changed into a prime (57406663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39631 + ... + 41053.

It is an arithmetic number, because the mean of its divisors is an integer number (5626224).

Almost surely, 2^57406666 is an apocalyptic number.

57406666 is a deficient number, since it is larger than the sum of its proper divisors (32612918).

57406666 is a wasteful number, since it uses less digits than its factorization.

57406666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2325.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 57406666 is about 7576.7186829128. The cubic root of 57406666 is about 385.7631817169.

The spelling of 57406666 in words is "fifty-seven million, four hundred six thousand, six hundred sixty-six".