72716489 has 2 divisors, whose sum is σ = 72716490. Its totient is φ = 72716488.

The previous prime is 72716461. The next prime is 72716503. The reversal of 72716489 is 98461727.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72250000 + 466489 = 8500^2 + 683^2 .

It is a cyclic number.

It is not a de Polignac number, because 72716489 - 2⁸ = 72716233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72716459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36358244 + 36358245.

It is an arithmetic number, because the mean of its divisors is an integer number (36358245).

Almost surely, 2^72716489 is an apocalyptic number.

It is an amenable number.

72716489 is a deficient number, since it is larger than the sum of its proper divisors (1).

72716489 is an equidigital number, since it uses as much as digits as its factorization.

72716489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 44.

The square root of 72716489 is about 8527.3963787313. The cubic root of 72716489 is about 417.3921726631.

The spelling of 72716489 in words is "seventy-two million, seven hundred sixteen thousand, four hundred eighty-nine".