649574432 has 48 divisors (see below), whose sum is σ = 1449725760. Its totient is φ = 284020992.

The previous prime is 649574411. The next prime is 649574449. The reversal of 649574432 is 234475946.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33188 + ... + 48995.

It is an arithmetic number, because the mean of its divisors is an integer number (30202620).

Almost surely, 2^649574432 is an apocalyptic number.

It is an amenable number.

649574432 is an abundant number, since it is smaller than the sum of its proper divisors (800151328).

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

649574432 is a wasteful number, since it uses less digits than its factorization.

649574432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82225 (or 82217 counting only the distinct ones).

The product of its digits is 725760, while the sum is 44.

The square root of 649574432 is about 25486.7501262911. The cubic root of 649574432 is about 866.0500160457.

The spelling of 649574432 in words is "six hundred forty-nine million, five hundred seventy-four thousand, four hundred thirty-two".