649302672 has 40 divisors (see below), whose sum is σ = 1678392576. Its totient is φ = 216301696.

The previous prime is 649302671. The next prime is 649302683. The reversal of 649302672 is 276203946.

It is a self number, because there is not a number n which added to its sum of digits gives 649302672.

It is not an unprimeable number, because it can be changed into a prime (649302671) 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, 104353 + ... + 110399.

Almost surely, 2^649302672 is an apocalyptic number.

It is an amenable number.

649302672 is an abundant number, since it is smaller than the sum of its proper divisors (1029089904).

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

649302672 is a wasteful number, since it uses less digits than its factorization.

649302672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8295 (or 8289 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 649302672 is about 25481.4181708946. The cubic root of 649302672 is about 865.9292238417.

The spelling of 649302672 in words is "six hundred forty-nine million, three hundred two thousand, six hundred seventy-two".