649176669976 has 16 divisors (see below), whose sum is σ = 1217224245600. Its totient is φ = 324583537824.

The previous prime is 649176669949. The next prime is 649176670019. The reversal of 649176669976 is 679966671946.

It is a super-3 number, since 3×649176669976³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12210 + ... + 1139518.

It is an arithmetic number, because the mean of its divisors is an integer number (76076515350).

Almost surely, 2^649176669976 is an apocalyptic number.

It is an amenable number.

649176669976 is a deficient number, since it is larger than the sum of its proper divisors (568047575624).

649176669976 is a wasteful number, since it uses less digits than its factorization.

649176669976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199298 (or 1199294 counting only the distinct ones).

The product of its digits is 1111065984, while the sum is 76.

The spelling of 649176669976 in words is "six hundred forty-nine billion, one hundred seventy-six million, six hundred sixty-nine thousand, nine hundred seventy-six".