57664473 has 8 divisors (see below), whose sum is σ = 80228928. Its totient is φ = 36771504.

The previous prime is 57664469. The next prime is 57664483. The reversal of 57664473 is 37446675.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57664473 - 2² = 57664469 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57664403) 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, 417790 + ... + 417927.

It is an arithmetic number, because the mean of its divisors is an integer number (10028616).

Almost surely, 2^57664473 is an apocalyptic number.

It is an amenable number.

57664473 is a deficient number, since it is larger than the sum of its proper divisors (22564455).

57664473 is a wasteful number, since it uses less digits than its factorization.

57664473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835743.

The product of its digits is 423360, while the sum is 42.

The square root of 57664473 is about 7593.7127283036. The cubic root of 57664473 is about 386.3397926995.

The spelling of 57664473 in words is "fifty-seven million, six hundred sixty-four thousand, four hundred seventy-three".