8490657 has 16 divisors (see below), whose sum is σ = 13501440. Its totient is φ = 4640592.

The previous prime is 8490637. The next prime is 8490661. The reversal of 8490657 is 7560948.

It is not a de Polignac number, because 8490657 - 2⁶ = 8490593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8490617) 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, 8307 + ... + 9272.

It is an arithmetic number, because the mean of its divisors is an integer number (843840).

Almost surely, 2^8490657 is an apocalyptic number.

It is an amenable number.

8490657 is a deficient number, since it is larger than the sum of its proper divisors (5010783).

8490657 is a wasteful number, since it uses less digits than its factorization.

8490657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17612.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 8490657 is about 2913.8731955938. The cubic root of 8490657 is about 204.0079533616.

The spelling of 8490657 in words is "eight million, four hundred ninety thousand, six hundred fifty-seven".