57666020 has 24 divisors (see below), whose sum is σ = 121249464. Its totient is φ = 23037696.

The previous prime is 57666019. The next prime is 57666031. The reversal of 57666020 is 2066675.

It can be written as a sum of positive squares in 4 ways, for example, as 27556 + 57638464 = 166^2 + 7592^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23072 + ... + 25448.

It is an arithmetic number, because the mean of its divisors is an integer number (5052061).

Almost surely, 2^57666020 is an apocalyptic number.

It is an amenable number.

57666020 is an abundant number, since it is smaller than the sum of its proper divisors (63583444).

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

57666020 is a wasteful number, since it uses less digits than its factorization.

57666020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3599 (or 3597 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 57666020 is about 7593.8145882027. The cubic root of 57666020 is about 386.3432475264.

The spelling of 57666020 in words is "fifty-seven million, six hundred sixty-six thousand, twenty".