8668731 has 8 divisors (see below), whose sum is σ = 12166720. Its totient is φ = 5474952.

The previous prime is 8668721. The next prime is 8668739. The reversal of 8668731 is 1378668.

8668731 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8668731 - 2¹⁰ = 8667707 is a prime.

It is a super-2 number, since 2×8668731² = 150293794300722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8668731.

It is not an unprimeable number, because it can be changed into a prime (8668739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75985 + ... + 76098.

It is an arithmetic number, because the mean of its divisors is an integer number (1520840).

Almost surely, 2^8668731 is an apocalyptic number.

8668731 is a deficient number, since it is larger than the sum of its proper divisors (3497989).

8668731 is a wasteful number, since it uses less digits than its factorization.

8668731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152105.

The product of its digits is 48384, while the sum is 39.

The square root of 8668731 is about 2944.2708774839. The cubic root of 8668731 is about 205.4243124992.

The spelling of 8668731 in words is "eight million, six hundred sixty-eight thousand, seven hundred thirty-one".