641964762 has 12 divisors (see below), whose sum is σ = 1390923690. Its totient is φ = 213988248.

The previous prime is 641964749. The next prime is 641964769. The reversal of 641964762 is 267469146.

641964762 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 632472201 + 9492561 = 25149^2 + 3081^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (641964769) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17832337 + ... + 17832372.

Almost surely, 2^641964762 is an apocalyptic number.

641964762 is an abundant number, since it is smaller than the sum of its proper divisors (748958928).

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

641964762 is a wasteful number, since it uses less digits than its factorization.

641964762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35664717 (or 35664714 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 641964762 is about 25337.0235426342. The cubic root of 641964762 is about 862.6548400016.

The spelling of 641964762 in words is "six hundred forty-one million, nine hundred sixty-four thousand, seven hundred sixty-two".