8722417 has 16 divisors (see below), whose sum is σ = 10123200. Its totient is φ = 7439040.

The previous prime is 8722409. The next prime is 8722423. The reversal of 8722417 is 7142278.

8722417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 8722417 - 2³ = 8722409 is a prime.

8722417 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8722447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11434 + ... + 12172.

It is an arithmetic number, because the mean of its divisors is an integer number (632700).

Almost surely, 2^8722417 is an apocalyptic number.

It is an amenable number.

8722417 is a deficient number, since it is larger than the sum of its proper divisors (1400783).

8722417 is a wasteful number, since it uses less digits than its factorization.

8722417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816.

The product of its digits is 6272, while the sum is 31.

The square root of 8722417 is about 2953.3738334319. The cubic root of 8722417 is about 205.8475086626.

The spelling of 8722417 in words is "eight million, seven hundred twenty-two thousand, four hundred seventeen".