8685663393 has 16 divisors (see below), whose sum is σ = 12724588800. Its totient is φ = 5226164880.

The previous prime is 8685663293. The next prime is 8685663451. The reversal of 8685663393 is 3933665868.

It is not a de Polignac number, because 8685663393 - 2¹³ = 8685655201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8685663293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 942183 + ... + 951356.

It is an arithmetic number, because the mean of its divisors is an integer number (795286800).

Almost surely, 2^8685663393 is an apocalyptic number.

It is an amenable number.

8685663393 is a deficient number, since it is larger than the sum of its proper divisors (4038925407).

8685663393 is a wasteful number, since it uses less digits than its factorization.

8685663393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893692.

The product of its digits is 16796160, while the sum is 57.

The square root of 8685663393 is about 93196.9065634692. The cubic root of 8685663393 is about 2055.5797539014.

The spelling of 8685663393 in words is "eight billion, six hundred eighty-five million, six hundred sixty-three thousand, three hundred ninety-three".