641368504 has 32 divisors (see below), whose sum is σ = 1377122400. Its totient is φ = 274320000.

The previous prime is 641368477. The next prime is 641368513. The reversal of 641368504 is 405863146.

It is a happy number.

It is a super-2 number, since 2×641368504² = 822707115846396032, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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, 17254 + ... + 39754.

It is an arithmetic number, because the mean of its divisors is an integer number (43035075).

Almost surely, 2^641368504 is an apocalyptic number.

It is an amenable number.

641368504 is an abundant number, since it is smaller than the sum of its proper divisors (735753896).

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

641368504 is a wasteful number, since it uses less digits than its factorization.

641368504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23023 (or 23019 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 641368504 is about 25325.2542731559. The cubic root of 641368504 is about 862.3876788271.

The spelling of 641368504 in words is "six hundred forty-one million, three hundred sixty-eight thousand, five hundred four".