646466004204 has 24 divisors (see below), whose sum is σ = 1597151305008. Its totient is φ = 202812864000.

The previous prime is 646466004113. The next prime is 646466004227. The reversal of 646466004204 is 402400664646.

It is a super-2 number, since 2×646466004204² (a number of 24 digits) 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, 1584475297 + ... + 1584475704.

It is an arithmetic number, because the mean of its divisors is an integer number (66547971042).

Almost surely, 2^646466004204 is an apocalyptic number.

It is an amenable number.

646466004204 is an abundant number, since it is smaller than the sum of its proper divisors (950685300804).

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

646466004204 is a wasteful number, since it uses less digits than its factorization.

646466004204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3168951025 (or 3168951023 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 646466004204 in words is "six hundred forty-six billion, four hundred sixty-six million, four thousand, two hundred four".