8722637 has 12 divisors (see below), whose sum is σ = 11069856. Its totient is φ = 6796440.

The previous prime is 8722631. The next prime is 8722643. The reversal of 8722637 is 7362278.

It is an interprime number because it is at equal distance from previous prime (8722631) and next prime (8722643).

It is not a de Polignac number, because 8722637 - 2⁴ = 8722621 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8722597 and 8722606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8722631) 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, 7553 + ... + 8630.

It is an arithmetic number, because the mean of its divisors is an integer number (922488).

Almost surely, 2^8722637 is an apocalyptic number.

It is an amenable number.

8722637 is a deficient number, since it is larger than the sum of its proper divisors (2347219).

8722637 is a wasteful number, since it uses less digits than its factorization.

8722637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16208 (or 16201 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 8722637 is about 2953.4110787359. The cubic root of 8722637 is about 205.8492393018.

It can be divided in two parts, 872263 and 7, that multiplied together give a square (6105841 = 2471²).

The spelling of 8722637 in words is "eight million, seven hundred twenty-two thousand, six hundred thirty-seven".