8674688657 has 4 divisors (see below), whose sum is σ = 8724831540. Its totient is φ = 8624545776.

The previous prime is 8674688653. The next prime is 8674688669. The reversal of 8674688657 is 7568864768.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8260810321 + 413878336 = 90889^2 + 20344^2 .

It is a cyclic number.

It is not a de Polignac number, because 8674688657 - 2² = 8674688653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8674688593 and 8674688602.

It is not an unprimeable number, because it can be changed into a prime (8674688653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25071182 + ... + 25071527.

It is an arithmetic number, because the mean of its divisors is an integer number (2181207885).

Almost surely, 2^8674688657 is an apocalyptic number.

It is an amenable number.

8674688657 is a deficient number, since it is larger than the sum of its proper divisors (50142883).

8674688657 is a wasteful number, since it uses less digits than its factorization.

8674688657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50142882.

The product of its digits is 108380160, while the sum is 65.

The square root of 8674688657 is about 93138.0086591935. The cubic root of 8674688657 is about 2054.7136157450.

The spelling of 8674688657 in words is "eight billion, six hundred seventy-four million, six hundred eighty-eight thousand, six hundred fifty-seven".