646424512 has 14 divisors (see below), whose sum is σ = 1282748768. Its totient is φ = 323212224.

The previous prime is 646424497. The next prime is 646424549. The reversal of 646424512 is 215424646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050128 + ... + 5050255.

It is an arithmetic number, because the mean of its divisors is an integer number (91624912).

Almost surely, 2^646424512 is an apocalyptic number.

It is an amenable number.

646424512 is a deficient number, since it is larger than the sum of its proper divisors (636324256).

646424512 is a wasteful number, since it uses less digits than its factorization.

646424512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10100395 (or 10100385 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

The square root of 646424512 is about 25424.8797833933. The cubic root of 646424512 is about 864.6478622790.

It can be divided in two parts, 6464 and 24512, that added together give a square (30976 = 176²).

The spelling of 646424512 in words is "six hundred forty-six million, four hundred twenty-four thousand, five hundred twelve".