72220567 has 2 divisors, whose sum is σ = 72220568. Its totient is φ = 72220566.

The previous prime is 72220549. The next prime is 72220583. The reversal of 72220567 is 76502227.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72220567 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72220517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36110283 + 36110284.

It is an arithmetic number, because the mean of its divisors is an integer number (36110284).

Almost surely, 2^72220567 is an apocalyptic number.

72220567 is a deficient number, since it is larger than the sum of its proper divisors (1).

72220567 is an equidigital number, since it uses as much as digits as its factorization.

72220567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 72220567 is about 8498.2684706945. The cubic root of 72220567 is about 416.4411443751.

The spelling of 72220567 in words is "seventy-two million, two hundred twenty thousand, five hundred sixty-seven".