641514264 has 32 divisors (see below), whose sum is σ = 1605073920. Its totient is φ = 213666336.

The previous prime is 641514259. The next prime is 641514277. The reversal of 641514264 is 462415146.

641514264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 21777 + ... + 41919.

It is an arithmetic number, because the mean of its divisors is an integer number (50158560).

Almost surely, 2^641514264 is an apocalyptic number.

It is an amenable number.

641514264 is an abundant number, since it is smaller than the sum of its proper divisors (963559656).

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

641514264 is a wasteful number, since it uses less digits than its factorization.

641514264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21479 (or 21475 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 641514264 is about 25328.1318695241. The cubic root of 641514264 is about 862.4530037825.

The spelling of 641514264 in words is "six hundred forty-one million, five hundred fourteen thousand, two hundred sixty-four".