72364717 has 2 divisors, whose sum is σ = 72364718. Its totient is φ = 72364716.

The previous prime is 72364679. The next prime is 72364729. The reversal of 72364717 is 71746327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66357316 + 6007401 = 8146^2 + 2451^2 .

It is a cyclic number.

It is not a de Polignac number, because 72364717 - 2¹⁹ = 71840429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72364517) 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, 36182358 + 36182359.

It is an arithmetic number, because the mean of its divisors is an integer number (36182359).

Almost surely, 2^72364717 is an apocalyptic number.

It is an amenable number.

72364717 is a deficient number, since it is larger than the sum of its proper divisors (1).

72364717 is an equidigital number, since it uses as much as digits as its factorization.

72364717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49392, while the sum is 37.

The square root of 72364717 is about 8506.7453823422. The cubic root of 72364717 is about 416.7180280863.

The spelling of 72364717 in words is "seventy-two million, three hundred sixty-four thousand, seven hundred seventeen".