72216167 has 2 divisors, whose sum is σ = 72216168. Its totient is φ = 72216166.

The previous prime is 72216149. The next prime is 72216197. The reversal of 72216167 is 76161227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72216167 - 2⁶ = 72216103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72216197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36108083 + 36108084.

It is an arithmetic number, because the mean of its divisors is an integer number (36108084).

Almost surely, 2^72216167 is an apocalyptic number.

72216167 is a deficient number, since it is larger than the sum of its proper divisors (1).

72216167 is an equidigital number, since it uses as much as digits as its factorization.

72216167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 32.

The square root of 72216167 is about 8498.0095904865. The cubic root of 72216167 is about 416.4326870509.

The spelling of 72216167 in words is "seventy-two million, two hundred sixteen thousand, one hundred sixty-seven".