57708666 has 64 divisors (see below), whose sum is σ = 135907200. Its totient is φ = 18119808.

The previous prime is 57708661. The next prime is 57708671. The reversal of 57708666 is 66680775.

It is an interprime number because it is at equal distance from previous prime (57708661) and next prime (57708671).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57708661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66910 + ... + 67766.

It is an arithmetic number, because the mean of its divisors is an integer number (2123550).

Almost surely, 2^57708666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57708666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67953600).

57708666 is an abundant number, since it is smaller than the sum of its proper divisors (78198534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57708666 is a wasteful number, since it uses less digits than its factorization.

57708666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940 (or 934 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 57708666 is about 7596.6220124474. The cubic root of 57708666 is about 386.4384620870.

The spelling of 57708666 in words is "fifty-seven million, seven hundred eight thousand, six hundred sixty-six".