643314524 has 24 divisors (see below), whose sum is σ = 1150396800. Its totient is φ = 314682480.

The previous prime is 643314481. The next prime is 643314533. The reversal of 643314524 is 425413346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43337 + ... + 56255.

It is an arithmetic number, because the mean of its divisors is an integer number (47933200).

Almost surely, 2^643314524 is an apocalyptic number.

It is an amenable number.

643314524 is a deficient number, since it is larger than the sum of its proper divisors (507082276).

643314524 is a wasteful number, since it uses less digits than its factorization.

643314524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13193 (or 13191 counting only the distinct ones).

The product of its digits is 34560, while the sum is 32.

The square root of 643314524 is about 25363.6457158666. The cubic root of 643314524 is about 863.2590079605.

The spelling of 643314524 in words is "six hundred forty-three million, three hundred fourteen thousand, five hundred twenty-four".