8516586645 has 80 divisors (see below), whose sum is σ = 18474179328. Its totient is φ = 3664258560.

The previous prime is 8516586613. The next prime is 8516586647. The reversal of 8516586645 is 5466856158.

8516586645 is a `hidden beast` number, since 8 + 5 + 16 + 586 + 6 + 45 = 666.

8516586645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8516586645 - 2⁵ = 8516586613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8516586591 and 8516586600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8516586647) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 40161 + ... + 136550.

Almost surely, 2^8516586645 is an apocalyptic number.

8516586645 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8516586645 is an abundant number, since it is smaller than the sum of its proper divisors (9957592683).

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

8516586645 is a wasteful number, since it uses less digits than its factorization.

8516586645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176752 (or 176743 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 54.

The square root of 8516586645 is about 92285.3544447872. The cubic root of 8516586645 is about 2042.1541583179.

The spelling of 8516586645 in words is "eight billion, five hundred sixteen million, five hundred eighty-six thousand, six hundred forty-five".