8721167 has 12 divisors (see below), whose sum is σ = 10926216. Its totient is φ = 6899760.

The previous prime is 8721157. The next prime is 8721191. The reversal of 8721167 is 7611278.

8721167 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8721167 - 2⁸ = 8720911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8721157) 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, 6209 + ... + 7482.

It is an arithmetic number, because the mean of its divisors is an integer number (910518).

Almost surely, 2^8721167 is an apocalyptic number.

8721167 is a deficient number, since it is larger than the sum of its proper divisors (2205049).

8721167 is a wasteful number, since it uses less digits than its factorization.

8721167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13718 (or 13711 counting only the distinct ones).

The product of its digits is 4704, while the sum is 32.

The square root of 8721167 is about 2953.1622034694. The cubic root of 8721167 is about 205.8376749327.

It can be divided in two parts, 87211 and 67, that added together give a palindrome (87278).

The spelling of 8721167 in words is "eight million, seven hundred twenty-one thousand, one hundred sixty-seven".