649627392 has 72 divisors (see below), whose sum is σ = 1830696336. Its totient is φ = 203800576.

The previous prime is 649627367. The next prime is 649627393. The reversal of 649627392 is 293726946.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649627393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11823 + ... + 37934.

It is an arithmetic number, because the mean of its divisors is an integer number (25426338).

Almost surely, 2^649627392 is an apocalyptic number.

It is an amenable number.

649627392 is an abundant number, since it is smaller than the sum of its proper divisors (1181068944).

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

649627392 is a wasteful number, since it uses less digits than its factorization.

649627392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49793 (or 49779 counting only the distinct ones).

The product of its digits is 979776, while the sum is 48.

The square root of 649627392 is about 25487.7890763401. The cubic root of 649627392 is about 866.0735518460.

The spelling of 649627392 in words is "six hundred forty-nine million, six hundred twenty-seven thousand, three hundred ninety-two".