8568649489 has 3 divisors (see below), whose sum is σ = 8568742057. Its totient is φ = 8568556922.

The previous prime is 8568649447. The next prime is 8568649493. The reversal of 8568649489 is 9849468658.

The square root of 8568649489 is 92567.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 8568649489 - 2⁷ = 8568649361 is a prime.

It is a super-2 number, since 2×8568649489² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8568619489) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 46284 + ... + 138850.

Almost surely, 2^8568649489 is an apocalyptic number.

8568649489 is the 92567-th square number.

8568649489 is the 46284-th centered octagonal number.

It is an amenable number.

8568649489 is a deficient number, since it is larger than the sum of its proper divisors (92568).

8568649489 is an frugal number, since it uses more digits than its factorization.

8568649489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185134 (or 92567 counting only the distinct ones).

The product of its digits is 119439360, while the sum is 67.

The cubic root of 8568649489 is about 2046.3070128668.

The spelling of 8568649489 in words is "eight billion, five hundred sixty-eight million, six hundred forty-nine thousand, four hundred eighty-nine".