646224463602 has 48 divisors (see below), whose sum is σ = 1409398742232. Its totient is φ = 213986373120.

The previous prime is 646224463589. The next prime is 646224463627. The reversal of 646224463602 is 206364422646.

646224463602 is a `hidden beast` number, since 6 + 4 + 6 + 2 + 2 + 4 + 4 + 636 + 0 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 482401091601 + 163823372001 = 694551^2 + 404751^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13317328 + ... + 13365764.

Almost surely, 2^646224463602 is an apocalyptic number.

646224463602 is an abundant number, since it is smaller than the sum of its proper divisors (763174278630).

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

646224463602 is a wasteful number, since it uses less digits than its factorization.

646224463602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53323 (or 53320 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 45.

The spelling of 646224463602 in words is "six hundred forty-six billion, two hundred twenty-four million, four hundred sixty-three thousand, six hundred two".