649713160 has 16 divisors (see below), whose sum is σ = 1461854700. Its totient is φ = 259885248.

The previous prime is 649713149. The next prime is 649713173. The reversal of 649713160 is 61317946.

It can be written as a sum of positive squares in 2 ways, for example, as 643231044 + 6482116 = 25362^2 + 2546^2 .

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, 8121375 + ... + 8121454.

Almost surely, 2^649713160 is an apocalyptic number.

It is an amenable number.

649713160 is an abundant number, since it is smaller than the sum of its proper divisors (812141540).

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

649713160 is a wasteful number, since it uses less digits than its factorization.

649713160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16242840 (or 16242836 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 649713160 is about 25489.4715519957. The cubic root of 649713160 is about 866.1116650417. Note that the first 3 decimals are identical.

The spelling of 649713160 in words is "six hundred forty-nine million, seven hundred thirteen thousand, one hundred sixty".