649323696 has 80 divisors (see below), whose sum is σ = 1956224000. Its totient is φ = 185516352.

The previous prime is 649323679. The next prime is 649323709. The reversal of 649323696 is 696323946.

649323696 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3256 + ... + 36183.

It is an arithmetic number, because the mean of its divisors is an integer number (24452800).

Almost surely, 2^649323696 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 649323696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (978112000).

649323696 is an abundant number, since it is smaller than the sum of its proper divisors (1306900304).

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

649323696 is a wasteful number, since it uses less digits than its factorization.

649323696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39471 (or 39451 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 48.

The square root of 649323696 is about 25481.8307034640. The cubic root of 649323696 is about 865.9385698166.

The spelling of 649323696 in words is "six hundred forty-nine million, three hundred twenty-three thousand, six hundred ninety-six".