649076621922 has 16 divisors (see below), whose sum is σ = 1442392493280. Its totient is φ = 216358873956.

The previous prime is 649076621917. The next prime is 649076621951. The reversal of 649076621922 is 229126670946.

649076621922 is a `hidden beast` number, since 6 + 4 + 9 + 0 + 7 + 6 + 621 + 9 + 2 + 2 = 666.

It is a super-2 number, since 2×649076621922² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 12019937443 = 649076621922 / (6 + 4 + 9 + 0 + 7 + 6 + 6 + 2 + 1 + 9 + 2 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6009968668 + ... + 6009968775.

It is an arithmetic number, because the mean of its divisors is an integer number (90149530830).

Almost surely, 2^649076621922 is an apocalyptic number.

649076621922 is an abundant number, since it is smaller than the sum of its proper divisors (793315871358).

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

649076621922 is a wasteful number, since it uses less digits than its factorization.

649076621922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12019937454 (or 12019937448 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 649076621922 in words is "six hundred forty-nine billion, seventy-six million, six hundred twenty-one thousand, nine hundred twenty-two".