8660249 has 4 divisors (see below), whose sum is σ = 9326436. Its totient is φ = 7994064.

The previous prime is 8660233. The next prime is 8660263. The reversal of 8660249 is 9420668.

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 3222025 + 5438224 = 1795^2 + 2332^2 .

It is not a de Polignac number, because 8660249 - 2⁴ = 8660233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8660269) 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, 333074 + ... + 333099.

It is an arithmetic number, because the mean of its divisors is an integer number (2331609).

Almost surely, 2^8660249 is an apocalyptic number.

It is an amenable number.

8660249 is a deficient number, since it is larger than the sum of its proper divisors (666187).

8660249 is a wasteful number, since it uses less digits than its factorization.

8660249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666186.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 8660249 is about 2942.8301004305. The cubic root of 8660249 is about 205.3572908624.

The spelling of 8660249 in words is "eight million, six hundred sixty thousand, two hundred forty-nine".