649406908 has 12 divisors (see below), whose sum is σ = 1143989392. Its totient is φ = 322552800.

The previous prime is 649406899. The next prime is 649406929. The reversal of 649406908 is 809604946.

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, 536985 + ... + 538192.

Almost surely, 2^649406908 is an apocalyptic number.

It is an amenable number.

649406908 is a deficient number, since it is larger than the sum of its proper divisors (494582484).

649406908 is a wasteful number, since it uses less digits than its factorization.

649406908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075332 (or 1075330 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 649406908 is about 25483.4634223843. The cubic root of 649406908 is about 865.9755587652.

The spelling of 649406908 in words is "six hundred forty-nine million, four hundred six thousand, nine hundred eight".