649659362976 has 96 divisors (see below), whose sum is σ = 2040596752320. Its totient is φ = 199895185152.

The previous prime is 649659362959. The next prime is 649659363047. The reversal of 649659362976 is 679263956946.

It is a happy number.

649659362976 is a `hidden beast` number, since 6 + 4 + 9 + 6 + 593 + 6 + 29 + 7 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28908790 + ... + 28931253.

It is an arithmetic number, because the mean of its divisors is an integer number (21256216170).

Almost surely, 2^649659362976 is an apocalyptic number.

It is an amenable number.

649659362976 is an abundant number, since it is smaller than the sum of its proper divisors (1390937389344).

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

649659362976 is a wasteful number, since it uses less digits than its factorization.

649659362976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57840075 (or 57840061 counting only the distinct ones).

The product of its digits is 793618560, while the sum is 72.

The spelling of 649659362976 in words is "six hundred forty-nine billion, six hundred fifty-nine million, three hundred sixty-two thousand, nine hundred seventy-six".