72630317 has 2 divisors, whose sum is σ = 72630318. Its totient is φ = 72630316.

The previous prime is 72630289. The next prime is 72630353. The reversal of 72630317 is 71303627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58537801 + 14092516 = 7651^2 + 3754^2 .

It is a cyclic number.

It is not a de Polignac number, because 72630317 - 2⁶ = 72630253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72630317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72630377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36315158 + 36315159.

It is an arithmetic number, because the mean of its divisors is an integer number (36315159).

Almost surely, 2^72630317 is an apocalyptic number.

It is an amenable number.

72630317 is a deficient number, since it is larger than the sum of its proper divisors (1).

72630317 is an equidigital number, since it uses as much as digits as its factorization.

72630317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 72630317 is about 8522.3422249989. The cubic root of 72630317 is about 417.2272319194.

The spelling of 72630317 in words is "seventy-two million, six hundred thirty thousand, three hundred seventeen".