646576352 has 24 divisors (see below), whose sum is σ = 1274744016. Its totient is φ = 322831872.

The previous prime is 646576349. The next prime is 646576361. The reversal of 646576352 is 253675646.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9368 + ... + 37160.

It is an arithmetic number, because the mean of its divisors is an integer number (53114334).

Almost surely, 2^646576352 is an apocalyptic number.

It is an amenable number.

646576352 is a deficient number, since it is larger than the sum of its proper divisors (628167664).

646576352 is a wasteful number, since it uses less digits than its factorization.

646576352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28530 (or 28522 counting only the distinct ones).

The product of its digits is 907200, while the sum is 44.

The square root of 646576352 is about 25427.8656595476. The cubic root of 646576352 is about 864.7155566248.

The spelling of 646576352 in words is "six hundred forty-six million, five hundred seventy-six thousand, three hundred fifty-two".