8253649664 has 36 divisors (see below), whose sum is σ = 17742377856. Its totient is φ = 3809375232.

The previous prime is 8253649639. The next prime is 8253649673. The reversal of 8253649664 is 4669463528.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1236704 + ... + 1243359.

Almost surely, 2^8253649664 is an apocalyptic number.

It is an amenable number.

8253649664 is an abundant number, since it is smaller than the sum of its proper divisors (9488728192).

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

8253649664 is a wasteful number, since it uses less digits than its factorization.

8253649664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480092 (or 2480078 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 53.

The square root of 8253649664 is about 90849.5991405576. The cubic root of 8253649664 is about 2020.9179293782.

The spelling of 8253649664 in words is "eight billion, two hundred fifty-three million, six hundred forty-nine thousand, six hundred sixty-four".