72718999 has 2 divisors, whose sum is σ = 72719000. Its totient is φ = 72718998.

The previous prime is 72718957. The next prime is 72719041. The reversal of 72718999 is 99981727.

It is a balanced prime because it is at equal distance from previous prime (72718957) and next prime (72719041).

It is a cyclic number.

It is not a de Polignac number, because 72718999 - 2⁹ = 72718487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72718699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36359499 + 36359500.

It is an arithmetic number, because the mean of its divisors is an integer number (36359500).

Almost surely, 2^72718999 is an apocalyptic number.

72718999 is a deficient number, since it is larger than the sum of its proper divisors (1).

72718999 is an equidigital number, since it uses as much as digits as its factorization.

72718999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 52.

The square root of 72718999 is about 8527.5435501673. The cubic root of 72718999 is about 417.3969750690.

The spelling of 72718999 in words is "seventy-two million, seven hundred eighteen thousand, nine hundred ninety-nine".