649265408 has 36 divisors (see below), whose sum is σ = 1413818448. Its totient is φ = 295119360.

The previous prime is 649265347. The next prime is 649265429. The reversal of 649265408 is 804562946.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 112466 + ... + 118097.

Almost surely, 2^649265408 is an apocalyptic number.

It is an amenable number.

649265408 is an abundant number, since it is smaller than the sum of its proper divisors (764553040).

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

649265408 is a wasteful number, since it uses less digits than its factorization.

649265408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230590 (or 230576 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 649265408 is about 25480.6869609122. The cubic root of 649265408 is about 865.9126580677.

The spelling of 649265408 in words is "six hundred forty-nine million, two hundred sixty-five thousand, four hundred eight".