57643663 has 48 divisors (see below), whose sum is σ = 80075520. Its totient is φ = 40176000.

The previous prime is 57643661. The next prime is 57643679. The reversal of 57643663 is 36634675.

It is not a de Polignac number, because 57643663 - 2¹ = 57643661 is a prime.

Its product of digits (272160) is a multiple of the sum of its prime factors (140).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57643661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1405923 + ... + 1405963.

It is an arithmetic number, because the mean of its divisors is an integer number (1668240).

Almost surely, 2^57643663 is an apocalyptic number.

57643663 is a deficient number, since it is larger than the sum of its proper divisors (22431857).

57643663 is a wasteful number, since it uses less digits than its factorization.

57643663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 109 counting only the distinct ones).

The product of its digits is 272160, while the sum is 40.

The square root of 57643663 is about 7592.3423921738. The cubic root of 57643663 is about 386.2933129059.

The spelling of 57643663 in words is "fifty-seven million, six hundred forty-three thousand, six hundred sixty-three".