649499646882 has 64 divisors (see below), whose sum is σ = 1339909691904. Its totient is φ = 209756252160.

The previous prime is 649499646871. The next prime is 649499646883. The reversal of 649499646882 is 288646994946.

It is a super-3 number, since 3×649499646882³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (649499646883) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 92032698 + ... + 92039754.

It is an arithmetic number, because the mean of its divisors is an integer number (20936088936).

Almost surely, 2^649499646882 is an apocalyptic number.

649499646882 is an abundant number, since it is smaller than the sum of its proper divisors (690410045022).

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

649499646882 is a wasteful number, since it uses less digits than its factorization.

649499646882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9643.

The product of its digits is 1289945088, while the sum is 75.

The spelling of 649499646882 in words is "six hundred forty-nine billion, four hundred ninety-nine million, six hundred forty-six thousand, eight hundred eighty-two".