649379952 has 60 divisors (see below), whose sum is σ = 1957164664. Its totient is φ = 199808640.

The previous prime is 649379917. The next prime is 649379981. The reversal of 649379952 is 259973946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171574 + ... + 175317.

Almost surely, 2^649379952 is an apocalyptic number.

It is an amenable number.

649379952 is an abundant number, since it is smaller than the sum of its proper divisors (1307784712).

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

649379952 is a wasteful number, since it uses less digits than its factorization.

649379952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346918 (or 346909 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 54.

The square root of 649379952 is about 25482.9345248933. The cubic root of 649379952 is about 865.9635767758.

The spelling of 649379952 in words is "six hundred forty-nine million, three hundred seventy-nine thousand, nine hundred fifty-two".