641413564 has 24 divisors (see below), whose sum is σ = 1231372800. Its totient is φ = 289919280.

The previous prime is 641413523. The next prime is 641413583. The reversal of 641413564 is 465314146.

It is a super-2 number, since 2×641413564² = 822822720166364192, which contains 22 as substring.

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, 32844 + ... + 48595.

It is an arithmetic number, because the mean of its divisors is an integer number (51307200).

Almost surely, 2^641413564 is an apocalyptic number.

It is an amenable number.

641413564 is a deficient number, since it is larger than the sum of its proper divisors (589959236).

641413564 is a wasteful number, since it uses less digits than its factorization.

641413564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81633 (or 81631 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 641413564 is about 25326.1438833471. The cubic root of 641413564 is about 862.4078743302.

The spelling of 641413564 in words is "six hundred forty-one million, four hundred thirteen thousand, five hundred sixty-four".