72307 has 2 divisors, whose sum is σ = 72308. Its totient is φ = 72306.

The previous prime is 72287. The next prime is 72313. The reversal of 72307 is 70327.

It is a strong prime.

It is an emirp because it is prime and its reverse (70327) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72307 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (72337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36153 + 36154.

It is an arithmetic number, because the mean of its divisors is an integer number (36154).

2⁷²³⁰⁷ is an apocalyptic number.

72307 is a deficient number, since it is larger than the sum of its proper divisors (1).

72307 is an equidigital number, since it uses as much as digits as its factorization.

72307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294, while the sum is 19.

The square root of 72307 is about 268.8996095200. The cubic root of 72307 is about 41.6607209294.

The spelling of 72307 in words is "seventy-two thousand, three hundred seven", and thus it is an iban number.