641594552 has 16 divisors (see below), whose sum is σ = 1273754160. Its totient is φ = 301926784.

The previous prime is 641594539. The next prime is 641594557. The reversal of 641594552 is 255495146.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641594557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2358668 + ... + 2358939.

It is an arithmetic number, because the mean of its divisors is an integer number (79609635).

Almost surely, 2^641594552 is an apocalyptic number.

It is an amenable number.

641594552 is a deficient number, since it is larger than the sum of its proper divisors (632159608).

641594552 is a wasteful number, since it uses less digits than its factorization.

641594552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4717630 (or 4717626 counting only the distinct ones).

The product of its digits is 216000, while the sum is 41.

The square root of 641594552 is about 25329.7167769401. The cubic root of 641594552 is about 862.4889820619.

The spelling of 641594552 in words is "six hundred forty-one million, five hundred ninety-four thousand, five hundred fifty-two".