649265336 has 16 divisors (see below), whose sum is σ = 1225128840. Its totient is φ = 322564320.

The previous prime is 649265293. The next prime is 649265347. The reversal of 649265336 is 633562946.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

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, 257210 + ... + 259721.

Almost surely, 2^649265336 is an apocalyptic number.

It is an amenable number.

649265336 is a deficient number, since it is larger than the sum of its proper divisors (575863504).

649265336 is a wasteful number, since it uses less digits than its factorization.

649265336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517094 (or 517090 counting only the distinct ones).

The product of its digits is 699840, while the sum is 44.

The square root of 649265336 is about 25480.6855480774. The cubic root of 649265336 is about 865.9126260594.

The spelling of 649265336 in words is "six hundred forty-nine million, two hundred sixty-five thousand, three hundred thirty-six".