72368497 has 2 divisors, whose sum is σ = 72368498. Its totient is φ = 72368496.

The previous prime is 72368489. The next prime is 72368501. The reversal of 72368497 is 79486327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52867441 + 19501056 = 7271^2 + 4416^2 .

It is an emirp because it is prime and its reverse (79486327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72368497 - 2³ = 72368489 is a prime.

It is not a weakly prime, because it can be changed into another prime (72368407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36184248 + 36184249.

It is an arithmetic number, because the mean of its divisors is an integer number (36184249).

Almost surely, 2^72368497 is an apocalyptic number.

72368497 is the 4912-nd hex number.

It is an amenable number.

72368497 is a deficient number, since it is larger than the sum of its proper divisors (1).

72368497 is an equidigital number, since it uses as much as digits as its factorization.

72368497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 46.

The square root of 72368497 is about 8506.9675560684. The cubic root of 72368497 is about 416.7252837711.

The spelling of 72368497 in words is "seventy-two million, three hundred sixty-eight thousand, four hundred ninety-seven".