649834752 has 72 divisors (see below), whose sum is σ = 1976597056. Its totient is φ = 185665536.

The previous prime is 649834739. The next prime is 649834753. The reversal of 649834752 is 257438946.

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

It is not an unprimeable number, because it can be changed into a prime (649834753) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 55063 + ... + 65814.

Almost surely, 2^649834752 is an apocalyptic number.

It is an amenable number.

649834752 is an abundant number, since it is smaller than the sum of its proper divisors (1326762304).

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

649834752 is a wasteful number, since it uses less digits than its factorization.

649834752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120903 (or 120889 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The square root of 649834752 is about 25491.8565820538. The cubic root of 649834752 is about 866.1656917964.

The spelling of 649834752 in words is "six hundred forty-nine million, eight hundred thirty-four thousand, seven hundred fifty-two".