649660974586 has 32 divisors (see below), whose sum is σ = 1051199831808. Its totient is φ = 299344610880.

The previous prime is 649660974563. The next prime is 649660974649. The reversal of 649660974586 is 685479066946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54263581 + ... + 54275551.

It is an arithmetic number, because the mean of its divisors is an integer number (32849994744).

Almost surely, 2^649660974586 is an apocalyptic number.

649660974586 is a deficient number, since it is larger than the sum of its proper divisors (401538857222).

649660974586 is a wasteful number, since it uses less digits than its factorization.

649660974586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15286.

The product of its (nonzero) digits is 470292480, while the sum is 70.

The spelling of 649660974586 in words is "six hundred forty-nine billion, six hundred sixty million, nine hundred seventy-four thousand, five hundred eighty-six".