57620642 has 4 divisors (see below), whose sum is σ = 86430966. Its totient is φ = 28810320.

The previous prime is 57620627. The next prime is 57620669. The reversal of 57620642 is 24602675.

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

It can be written as a sum of positive squares in only one way, i.e., 53860921 + 3759721 = 7339^2 + 1939^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57620599 and 57620608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14405159 + ... + 14405162.

Almost surely, 2^57620642 is an apocalyptic number.

57620642 is a deficient number, since it is larger than the sum of its proper divisors (28810324).

57620642 is a wasteful number, since it uses less digits than its factorization.

57620642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28810323.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 57620642 is about 7590.8261737442. The cubic root of 57620642 is about 386.2418817396.

The spelling of 57620642 in words is "fifty-seven million, six hundred twenty thousand, six hundred forty-two".