649149312 has 256 divisors, whose sum is σ = 2076295680. Its totient is φ = 175841280.

The previous prime is 649149287. The next prime is 649149323. The reversal of 649149312 is 213941946.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6066763 + ... + 6066869.

It is an arithmetic number, because the mean of its divisors is an integer number (8110530).

Almost surely, 2^649149312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649149312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1038147840).

649149312 is an abundant number, since it is smaller than the sum of its proper divisors (1427146368).

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

649149312 is a wasteful number, since it uses less digits than its factorization.

649149312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 217 counting only the distinct ones).

The product of its digits is 46656, while the sum is 39.

The square root of 649149312 is about 25478.4087415207. The cubic root of 649149312 is about 865.8610433314.

The spelling of 649149312 in words is "six hundred forty-nine million, one hundred forty-nine thousand, three hundred twelve".