57877640 has 16 divisors (see below), whose sum is σ = 130224780. Its totient is φ = 23151040.

The previous prime is 57877627. The next prime is 57877661. The reversal of 57877640 is 4677875.

It can be written as a sum of positive squares in 2 ways, for example, as 52504516 + 5373124 = 7246^2 + 2318^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57877591 and 57877600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723431 + ... + 723510.

Almost surely, 2^57877640 is an apocalyptic number.

It is an amenable number.

57877640 is an abundant number, since it is smaller than the sum of its proper divisors (72347140).

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

57877640 is a wasteful number, since it uses less digits than its factorization.

57877640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446952 (or 1446948 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 44.

The square root of 57877640 is about 7607.7355369387. The cubic root of 57877640 is about 386.8152652528.

The spelling of 57877640 in words is "fifty-seven million, eight hundred seventy-seven thousand, six hundred forty".