641264012 has 24 divisors (see below), whose sum is σ = 1172857056. Its totient is φ = 306206208.

The previous prime is 641264011. The next prime is 641264027. The reversal of 641264012 is 210462146.

It is a super-2 number, since 2×641264012² = 822439066172672288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641264011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56738 + ... + 67094.

It is an arithmetic number, because the mean of its divisors is an integer number (48869044).

Almost surely, 2^641264012 is an apocalyptic number.

It is an amenable number.

641264012 is a deficient number, since it is larger than the sum of its proper divisors (531593044).

641264012 is a wasteful number, since it uses less digits than its factorization.

641264012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11057 (or 11055 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 641264012 is about 25323.1911891057. The cubic root of 641264012 is about 862.3408427742.

The spelling of 641264012 in words is "six hundred forty-one million, two hundred sixty-four thousand, twelve".