649867332 has 12 divisors (see below), whose sum is σ = 1516357136. Its totient is φ = 216622440.

The previous prime is 649867321. The next prime is 649867349. The reversal of 649867332 is 233768946.

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

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, 27077794 + ... + 27077817.

Almost surely, 2^649867332 is an apocalyptic number.

It is an amenable number.

649867332 is an abundant number, since it is smaller than the sum of its proper divisors (866489804).

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

649867332 is a wasteful number, since it uses less digits than its factorization.

649867332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54155618 (or 54155616 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 48.

The square root of 649867332 is about 25492.4956016472. The cubic root of 649867332 is about 866.1801668644.

The spelling of 649867332 in words is "six hundred forty-nine million, eight hundred sixty-seven thousand, three hundred thirty-two".