646246572 has 24 divisors (see below), whose sum is σ = 1511419392. Its totient is φ = 214914000.

The previous prime is 646246541. The next prime is 646246583. The reversal of 646246572 is 275642646.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57304 + ... + 67647.

It is an arithmetic number, because the mean of its divisors is an integer number (62975808).

Almost surely, 2^646246572 is an apocalyptic number.

It is an amenable number.

646246572 is an abundant number, since it is smaller than the sum of its proper divisors (865172820).

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

646246572 is a wasteful number, since it uses less digits than its factorization.

646246572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125389 (or 125387 counting only the distinct ones).

The product of its digits is 483840, while the sum is 42.

The square root of 646246572 is about 25421.3802142999. The cubic root of 646246572 is about 864.5685183613.

The spelling of 646246572 in words is "six hundred forty-six million, two hundred forty-six thousand, five hundred seventy-two".