57664493 has 8 divisors (see below), whose sum is σ = 61139520. Its totient is φ = 54198720.

The previous prime is 57664483. The next prime is 57664507. The reversal of 57664493 is 39446675.

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

It is not a de Polignac number, because 57664493 - 2²² = 53470189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57664403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13778 + ... + 17468.

It is an arithmetic number, because the mean of its divisors is an integer number (7642440).

Almost surely, 2^57664493 is an apocalyptic number.

It is an amenable number.

57664493 is a deficient number, since it is larger than the sum of its proper divisors (3475027).

57664493 is a wasteful number, since it uses less digits than its factorization.

57664493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4627.

The product of its digits is 544320, while the sum is 44.

The square root of 57664493 is about 7593.7140451824. The cubic root of 57664493 is about 386.3398373647.

The spelling of 57664493 in words is "fifty-seven million, six hundred sixty-four thousand, four hundred ninety-three".