8657479 has 4 divisors (see below), whose sum is σ = 8670240. Its totient is φ = 8644720.

The previous prime is 8657461. The next prime is 8657503. The reversal of 8657479 is 9747568.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8657479 - 2²¹ = 6560327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8657449) 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, 5302 + ... + 6739.

It is an arithmetic number, because the mean of its divisors is an integer number (2167560).

Almost surely, 2^8657479 is an apocalyptic number.

8657479 is a deficient number, since it is larger than the sum of its proper divisors (12761).

8657479 is a wasteful number, since it uses less digits than its factorization.

8657479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12760.

The product of its digits is 423360, while the sum is 46.

The square root of 8657479 is about 2942.3594273984. The cubic root of 8657479 is about 205.3353938648.

The spelling of 8657479 in words is "eight million, six hundred fifty-seven thousand, four hundred seventy-nine".