57645389 has 8 divisors (see below), whose sum is σ = 58438080. Its totient is φ = 56856096.

The previous prime is 57645361. The next prime is 57645391. The reversal of 57645389 is 98354675.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57645389 is a prime.

It is a super-2 number, since 2×57645389² = 6645981745922642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57645349) 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, 69632 + ... + 70454.

It is an arithmetic number, because the mean of its divisors is an integer number (7304760).

Almost surely, 2^57645389 is an apocalyptic number.

It is an amenable number.

57645389 is a deficient number, since it is larger than the sum of its proper divisors (792691).

57645389 is an equidigital number, since it uses as much as digits as its factorization.

57645389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699.

The product of its digits is 907200, while the sum is 47.

The square root of 57645389 is about 7592.4560584833. The cubic root of 57645389 is about 386.2971684069.

The spelling of 57645389 in words is "fifty-seven million, six hundred forty-five thousand, three hundred eighty-nine".