72207719 has 2 divisors, whose sum is σ = 72207720. Its totient is φ = 72207718.

The previous prime is 72207703. The next prime is 72207739. The reversal of 72207719 is 91770227.

It is a weak prime.

It is an emirp because it is prime and its reverse (91770227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72207719 - 2⁴ = 72207703 is a prime.

It is a super-2 number, since 2×72207719² = 10427909366365922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72207739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36103859 + 36103860.

It is an arithmetic number, because the mean of its divisors is an integer number (36103860).

Almost surely, 2^72207719 is an apocalyptic number.

72207719 is a deficient number, since it is larger than the sum of its proper divisors (1).

72207719 is an equidigital number, since it uses as much as digits as its factorization.

72207719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 72207719 is about 8497.5125183785. The cubic root of 72207719 is about 416.4164480254.

The spelling of 72207719 in words is "seventy-two million, two hundred seven thousand, seven hundred nineteen".