649934652 has 12 divisors (see below), whose sum is σ = 1516514216. Its totient is φ = 216644880.

The previous prime is 649934611. The next prime is 649934683. The reversal of 649934652 is 256439946.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×649934652² = 844830103740722208, which contains 22 as substring.

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, 27080599 + ... + 27080622.

Almost surely, 2^649934652 is an apocalyptic number.

It is an amenable number.

649934652 is an abundant number, since it is smaller than the sum of its proper divisors (866579564).

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

649934652 is a wasteful number, since it uses less digits than its factorization.

649934652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54161228 (or 54161226 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 48.

The square root of 649934652 is about 25493.8159560314. The cubic root of 649934652 is about 866.2100751408.

The spelling of 649934652 in words is "six hundred forty-nine million, nine hundred thirty-four thousand, six hundred fifty-two".