649166796 has 18 divisors (see below), whose sum is σ = 1640949492. Its totient is φ = 216388920.

The previous prime is 649166767. The next prime is 649166797. The reversal of 649166796 is 697661946.

649166796 is a `hidden beast` number, since 6 + 491 + 6 + 67 + 96 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (649166797) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9016170 + ... + 9016241.

Almost surely, 2^649166796 is an apocalyptic number.

It is an amenable number.

649166796 is an abundant number, since it is smaller than the sum of its proper divisors (991782696).

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

649166796 is a wasteful number, since it uses less digits than its factorization.

649166796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18032421 (or 18032416 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 649166796 is about 25478.7518532600. The cubic root of 649166796 is about 865.8688168787.

The spelling of 649166796 in words is "six hundred forty-nine million, one hundred sixty-six thousand, seven hundred ninety-six".