8668736 has 14 divisors (see below), whose sum is σ = 17202150. Its totient is φ = 4334336.

The previous prime is 8668721. The next prime is 8668739. The reversal of 8668736 is 6378668.

It can be written as a sum of positive squares in only one way, i.e., 8667136 + 1600 = 2944^2 + 40^2 .

It is an Ulam number.

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 as a sum of consecutive naturals, namely, 67661 + ... + 67788.

It is an arithmetic number, because the mean of its divisors is an integer number (1228725).

Almost surely, 2^8668736 is an apocalyptic number.

It is an amenable number.

8668736 is a deficient number, since it is larger than the sum of its proper divisors (8533414).

8668736 is a wasteful number, since it uses less digits than its factorization.

8668736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135461 (or 135451 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 8668736 is about 2944.2717265905. The cubic root of 8668736 is about 205.4243519944.

The spelling of 8668736 in words is "eight million, six hundred sixty-eight thousand, seven hundred thirty-six".