646373424 has 40 divisors (see below), whose sum is σ = 1714932400. Its totient is φ = 209634048.

The previous prime is 646373417. The next prime is 646373471. The reversal of 646373424 is 424373646.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180199 + ... + 183750.

It is an arithmetic number, because the mean of its divisors is an integer number (42873310).

Almost surely, 2^646373424 is an apocalyptic number.

It is an amenable number.

646373424 is an abundant number, since it is smaller than the sum of its proper divisors (1068558976).

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

646373424 is a wasteful number, since it uses less digits than its factorization.

646373424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363997 (or 363991 counting only the distinct ones).

The product of its digits is 290304, while the sum is 39.

The square root of 646373424 is about 25423.8750783589. The cubic root of 646373424 is about 864.6250834946.

The spelling of 646373424 in words is "six hundred forty-six million, three hundred seventy-three thousand, four hundred twenty-four".