57639693 has 16 divisors (see below), whose sum is σ = 79012800. Its totient is φ = 37361280.

The previous prime is 57639691. The next prime is 57639697. The reversal of 57639693 is 39693675.

It is a happy number.

It is not a de Polignac number, because 57639693 - 2¹ = 57639691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57639691) 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, 14518 + ... + 18056.

It is an arithmetic number, because the mean of its divisors is an integer number (4938300).

Almost surely, 2^57639693 is an apocalyptic number.

It is an amenable number.

57639693 is a deficient number, since it is larger than the sum of its proper divisors (21373107).

57639693 is a wasteful number, since it uses less digits than its factorization.

57639693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3692.

The product of its digits is 918540, while the sum is 48.

The square root of 57639693 is about 7592.0809400322. The cubic root of 57639693 is about 386.2844445147.

The spelling of 57639693 in words is "fifty-seven million, six hundred thirty-nine thousand, six hundred ninety-three".