649867330 has 64 divisors (see below), whose sum is σ = 1429788672. Its totient is φ = 207590400.

The previous prime is 649867321. The next prime is 649867349. The reversal of 649867330 is 33768946.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117487 + ... + 122893.

It is an arithmetic number, because the mean of its divisors is an integer number (22340448).

Almost surely, 2^649867330 is an apocalyptic number.

649867330 is an abundant number, since it is smaller than the sum of its proper divisors (779921342).

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

649867330 is a wasteful number, since it uses less digits than its factorization.

649867330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5539.

The product of its (nonzero) digits is 653184, while the sum is 46.

The square root of 649867330 is about 25492.4955624199. The cubic root of 649867330 is about 866.1801659758.

The spelling of 649867330 in words is "six hundred forty-nine million, eight hundred sixty-seven thousand, three hundred thirty".