641266692 has 24 divisors (see below), whose sum is σ = 1632315552. Its totient is φ = 194323200.

The previous prime is 641266669. The next prime is 641266727. The reversal of 641266692 is 296662146.

It is a super-2 number, since 2×641266692² = 822445940537245728, which contains 22 as substring.

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, 2428909 + ... + 2429172.

It is an arithmetic number, because the mean of its divisors is an integer number (68013148).

Almost surely, 2^641266692 is an apocalyptic number.

It is an amenable number.

641266692 is an abundant number, since it is smaller than the sum of its proper divisors (991048860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641266692 is a wasteful number, since it uses less digits than its factorization.

641266692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4858099 (or 4858097 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 641266692 is about 25323.2441049720. The cubic root of 641266692 is about 862.3420440840.

The spelling of 641266692 in words is "six hundred forty-one million, two hundred sixty-six thousand, six hundred ninety-two".