72603317 has 2 divisors, whose sum is σ = 72603318. Its totient is φ = 72603316.

The previous prime is 72603301. The next prime is 72603329. The reversal of 72603317 is 71330627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38427601 + 34175716 = 6199^2 + 5846^2 .

It is a cyclic number.

It is not a de Polignac number, because 72603317 - 2⁴ = 72603301 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72603317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72603017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36301658 + 36301659.

It is an arithmetic number, because the mean of its divisors is an integer number (36301659).

Almost surely, 2^72603317 is an apocalyptic number.

It is an amenable number.

72603317 is a deficient number, since it is larger than the sum of its proper divisors (1).

72603317 is an equidigital number, since it uses as much as digits as its factorization.

72603317 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 72603317 is about 8520.7580061870. The cubic root of 72603317 is about 417.1755247172.

The spelling of 72603317 in words is "seventy-two million, six hundred three thousand, three hundred seventeen".