8657613081 has 24 divisors (see below), whose sum is σ = 13637886080. Its totient is φ = 5260316256.

The previous prime is 8657613079. The next prime is 8657613101. The reversal of 8657613081 is 1803167568.

It is not a de Polignac number, because 8657613081 - 2¹ = 8657613079 is a prime.

It is a super-2 number, since 2×8657613081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8657613031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 459091 + ... + 477576.

Almost surely, 2^8657613081 is an apocalyptic number.

It is an amenable number.

8657613081 is a deficient number, since it is larger than the sum of its proper divisors (4980272999).

8657613081 is a wasteful number, since it uses less digits than its factorization.

8657613081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936765 (or 936762 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 8657613081 is about 93046.2953641895. The cubic root of 8657613081 is about 2053.3645388985.

The spelling of 8657613081 in words is "eight billion, six hundred fifty-seven million, six hundred thirteen thousand, eighty-one".