8618663475 has 18 divisors (see below), whose sum is σ = 15436984316. Its totient is φ = 4596620400.

The previous prime is 8618663467. The next prime is 8618663479. The reversal of 8618663475 is 5743668168.

It is not a de Polignac number, because 8618663475 - 2³ = 8618663467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8618663479) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 19152361 + ... + 19152810.

Almost surely, 2^8618663475 is an apocalyptic number.

8618663475 is a deficient number, since it is larger than the sum of its proper divisors (6818320841).

8618663475 is a wasteful number, since it uses less digits than its factorization.

8618663475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38305187 (or 38305179 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 8618663475 is about 92836.7571331528. The cubic root of 8618663475 is about 2050.2806258703.

The spelling of 8618663475 in words is "eight billion, six hundred eighteen million, six hundred sixty-three thousand, four hundred seventy-five".