641164402 has 16 divisors (see below), whose sum is σ = 976217472. Its totient is φ = 315770400.

The previous prime is 641164397. The next prime is 641164411. The reversal of 641164402 is 204461146.

641164402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641164402² = 822183580784035208, 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, 127027 + ... + 131977.

It is an arithmetic number, because the mean of its divisors is an integer number (61013592).

Almost surely, 2^641164402 is an apocalyptic number.

641164402 is a deficient number, since it is larger than the sum of its proper divisors (335053070).

641164402 is a wasteful number, since it uses less digits than its factorization.

641164402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5913.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 641164402 is about 25321.2243384873. The cubic root of 641164402 is about 862.2961902246.

The spelling of 641164402 in words is "six hundred forty-one million, one hundred sixty-four thousand, four hundred two".