72924317 has 2 divisors, whose sum is σ = 72924318. Its totient is φ = 72924316.

The previous prime is 72924287. The next prime is 72924331. The reversal of 72924317 is 71342927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62900761 + 10023556 = 7931^2 + 3166^2 .

It is a cyclic number.

It is not a de Polignac number, because 72924317 - 2¹⁸ = 72662173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72924367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36462158 + 36462159.

It is an arithmetic number, because the mean of its divisors is an integer number (36462159).

Almost surely, 2^72924317 is an apocalyptic number.

It is an amenable number.

72924317 is a deficient number, since it is larger than the sum of its proper divisors (1).

72924317 is an equidigital number, since it uses as much as digits as its factorization.

72924317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 35.

The square root of 72924317 is about 8539.5735842020. The cubic root of 72924317 is about 417.7894382219.

The spelling of 72924317 in words is "seventy-two million, nine hundred twenty-four thousand, three hundred seventeen".