57664633 has 4 divisors (see below), whose sum is σ = 62100388. Its totient is φ = 53228880.

The previous prime is 57664603. The next prime is 57664643. The reversal of 57664633 is 33646675.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22771984 + 34892649 = 4772^2 + 5907^2 .

It is a cyclic number.

It is not a de Polignac number, because 57664633 - 2¹³ = 57656441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57664603) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2217858 + ... + 2217883.

It is an arithmetic number, because the mean of its divisors is an integer number (15525097).

Almost surely, 2^57664633 is an apocalyptic number.

It is an amenable number.

57664633 is a deficient number, since it is larger than the sum of its proper divisors (4435755).

57664633 is a wasteful number, since it uses less digits than its factorization.

57664633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4435754.

The product of its digits is 272160, while the sum is 40.

The square root of 57664633 is about 7593.7232633274. The cubic root of 57664633 is about 386.3401500212.

The spelling of 57664633 in words is "fifty-seven million, six hundred sixty-four thousand, six hundred thirty-three".