8638713 has 12 divisors (see below), whose sum is σ = 12600640. Its totient is φ = 5702616.

The previous prime is 8638697. The next prime is 8638727. The reversal of 8638713 is 3178368.

8638713 is a `hidden beast` number, since 8 + 638 + 7 + 13 = 666.

8638713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8638713 - 2⁴ = 8638697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8638733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3733 + ... + 5586.

Almost surely, 2^8638713 is an apocalyptic number.

It is an amenable number.

8638713 is a deficient number, since it is larger than the sum of its proper divisors (3961927).

8638713 is a wasteful number, since it uses less digits than its factorization.

8638713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9428 (or 9425 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 8638713 is about 2939.1687600408. The cubic root of 8638713 is about 205.1869244886.

The spelling of 8638713 in words is "eight million, six hundred thirty-eight thousand, seven hundred thirteen".