72786719 has 2 divisors, whose sum is σ = 72786720. Its totient is φ = 72786718.

The previous prime is 72786683. The next prime is 72786731. The reversal of 72786719 is 91768727.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72786719 is a prime.

It is a super-2 number, since 2×72786719² = 10595812925569922, 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 (72788719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36393359 + 36393360.

It is an arithmetic number, because the mean of its divisors is an integer number (36393360).

Almost surely, 2^72786719 is an apocalyptic number.

72786719 is a deficient number, since it is larger than the sum of its proper divisors (1).

72786719 is an equidigital number, since it uses as much as digits as its factorization.

72786719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 47.

The square root of 72786719 is about 8531.5132889775. The cubic root of 72786719 is about 417.5265026741.

The spelling of 72786719 in words is "seventy-two million, seven hundred eighty-six thousand, seven hundred nineteen".