649753692 has 24 divisors (see below), whose sum is σ = 1732676736. Its totient is φ = 185643888.

The previous prime is 649753681. The next prime is 649753723. The reversal of 649753692 is 296357946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3867498 + ... + 3867665.

It is an arithmetic number, because the mean of its divisors is an integer number (72194864).

Almost surely, 2^649753692 is an apocalyptic number.

It is an amenable number.

649753692 is an abundant number, since it is smaller than the sum of its proper divisors (1082923044).

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

649753692 is a wasteful number, since it uses less digits than its factorization.

649753692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7735177 (or 7735175 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 51.

The square root of 649753692 is about 25490.2666129643. The cubic root of 649753692 is about 866.1296753013.

The spelling of 649753692 in words is "six hundred forty-nine million, seven hundred fifty-three thousand, six hundred ninety-two".