649885588946 has 16 divisors (see below), whose sum is σ = 1064274210720. Its totient is φ = 295173355680.

The previous prime is 649885588931. The next prime is 649885588999.

649885588946 is nontrivially palindromic in base 10.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 11430236 + ... + 11486951.

It is an arithmetic number, because the mean of its divisors is an integer number (66517138170).

Almost surely, 2^649885588946 is an apocalyptic number.

649885588946 is a deficient number, since it is larger than the sum of its proper divisors (414388621774).

649885588946 is a wasteful number, since it uses less digits than its factorization.

649885588946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22918489.

The product of its digits is 4777574400, while the sum is 80.

The spelling of 649885588946 in words is "six hundred forty-nine billion, eight hundred eighty-five million, five hundred eighty-eight thousand, nine hundred forty-six".