57642650 has 24 divisors (see below), whose sum is σ = 115463964. Its totient is φ = 21283200.

The previous prime is 57642647. The next prime is 57642653. The reversal of 57642650 is 5624675.

It is an interprime number because it is at equal distance from previous prime (57642647) and next prime (57642653).

It can be written as a sum of positive squares in 6 ways, for example, as 383161 + 57259489 = 619^2 + 7567^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57642650.

It is not an unprimeable number, because it can be changed into a prime (57642653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43691 + ... + 44990.

Almost surely, 2^57642650 is an apocalyptic number.

57642650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

57642650 is an abundant number, since it is smaller than the sum of its proper divisors (57821314).

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

57642650 is a wasteful number, since it uses less digits than its factorization.

57642650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88706 (or 88701 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 57642650 is about 7592.2756799263. The cubic root of 57642650 is about 386.2910500528.

The spelling of 57642650 in words is "fifty-seven million, six hundred forty-two thousand, six hundred fifty".