646441606060 has 96 divisors (see below), whose sum is σ = 1397546357760. Its totient is φ = 251075455488.

The previous prime is 646441606049. The next prime is 646441606073. The reversal of 646441606060 is 60606144646.

It is a junction number, because it is equal to n+sod(n) for n = 646441605998 and 646441606016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68063232 + ... + 68072728.

It is an arithmetic number, because the mean of its divisors is an integer number (14557774560).

Almost surely, 2^646441606060 is an apocalyptic number.

It is an amenable number.

646441606060 is an abundant number, since it is smaller than the sum of its proper divisors (751104751700).

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

646441606060 is a wasteful number, since it uses less digits than its factorization.

646441606060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10295 (or 10293 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 43.

The spelling of 646441606060 in words is "six hundred forty-six billion, four hundred forty-one million, six hundred six thousand, sixty".