72716233 has 2 divisors, whose sum is σ = 72716234. Its totient is φ = 72716232.

The previous prime is 72716221. The next prime is 72716257. The reversal of 72716233 is 33261727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70778569 + 1937664 = 8413^2 + 1392^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72716233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72716195 and 72716204.

It is not a weakly prime, because it can be changed into another prime (72716213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36358116 + 36358117.

It is an arithmetic number, because the mean of its divisors is an integer number (36358117).

Almost surely, 2^72716233 is an apocalyptic number.

It is an amenable number.

72716233 is a deficient number, since it is larger than the sum of its proper divisors (1).

72716233 is an equidigital number, since it uses as much as digits as its factorization.

72716233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 31.

The square root of 72716233 is about 8527.3813682748. The cubic root of 72716233 is about 417.3916828497.

The spelling of 72716233 in words is "seventy-two million, seven hundred sixteen thousand, two hundred thirty-three".