8680657 has 4 divisors (see below), whose sum is σ = 8980020. Its totient is φ = 8381296.

The previous prime is 8680631. The next prime is 8680669. The reversal of 8680657 is 7560868.

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 1915456 + 6765201 = 1384^2 + 2601^2 .

It is a cyclic number.

It is not a de Polignac number, because 8680657 - 2¹⁵ = 8647889 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

8680657 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8680697) 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, 149638 + ... + 149695.

It is an arithmetic number, because the mean of its divisors is an integer number (2245005).

Almost surely, 2^8680657 is an apocalyptic number.

It is an amenable number.

8680657 is a deficient number, since it is larger than the sum of its proper divisors (299363).

8680657 is a wasteful number, since it uses less digits than its factorization.

8680657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299362.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 8680657 is about 2946.2954705868. The cubic root of 8680657 is about 205.5184734450.

The spelling of 8680657 in words is "eight million, six hundred eighty thousand, six hundred fifty-seven".