57687639 has 16 divisors (see below), whose sum is σ = 80006784. Its totient is φ = 36943200.

The previous prime is 57687607. The next prime is 57687653. The reversal of 57687639 is 93678675.

It is not a de Polignac number, because 57687639 - 2⁵ = 57687607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57687591 and 57687600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57687689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4204 + ... + 11534.

It is an arithmetic number, because the mean of its divisors is an integer number (5000424).

Almost surely, 2^57687639 is an apocalyptic number.

57687639 is a deficient number, since it is larger than the sum of its proper divisors (22319145).

57687639 is a wasteful number, since it uses less digits than its factorization.

57687639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7438.

The product of its digits is 1905120, while the sum is 51.

The square root of 57687639 is about 7595.2379159576. The cubic root of 57687639 is about 386.3915215424.

The spelling of 57687639 in words is "fifty-seven million, six hundred eighty-seven thousand, six hundred thirty-nine".