641082764 has 24 divisors (see below), whose sum is σ = 1284960768. Its totient is φ = 274150800.

The previous prime is 641082721. The next prime is 641082769. The reversal of 641082764 is 467280146.

It is a super-2 number, since 2×641082764² = 821974220595759392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641082769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11762 + ... + 37689.

It is an arithmetic number, because the mean of its divisors is an integer number (53540032).

Almost surely, 2^641082764 is an apocalyptic number.

It is an amenable number.

641082764 is an abundant number, since it is smaller than the sum of its proper divisors (643878004).

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

641082764 is a wasteful number, since it uses less digits than its factorization.

641082764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49925 (or 49923 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 641082764 is about 25319.6122403168. The cubic root of 641082764 is about 862.2595906025.

The spelling of 641082764 in words is "six hundred forty-one million, eighty-two thousand, seven hundred sixty-four".