8664251 has 4 divisors (see below), whose sum is σ = 8683272. Its totient is φ = 8645232.

The previous prime is 8664223. The next prime is 8664259. The reversal of 8664251 is 1524668.

8664251 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8664251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8664259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8810 + ... + 9743.

It is an arithmetic number, because the mean of its divisors is an integer number (2170818).

Almost surely, 2^8664251 is an apocalyptic number.

8664251 is a deficient number, since it is larger than the sum of its proper divisors (19021).

8664251 is a wasteful number, since it uses less digits than its factorization.

8664251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19020.

The product of its digits is 11520, while the sum is 32.

The square root of 8664251 is about 2943.5099795992. The cubic root of 8664251 is about 205.3889186411.

The spelling of 8664251 in words is "eight million, six hundred sixty-four thousand, two hundred fifty-one".