72603197 has 2 divisors, whose sum is σ = 72603198. Its totient is φ = 72603196.

The previous prime is 72603191. The next prime is 72603227. The reversal of 72603197 is 79130627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51681721 + 20921476 = 7189^2 + 4574^2 .

It is a cyclic number.

It is not a de Polignac number, because 72603197 - 2¹² = 72599101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72603191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36301598 + 36301599.

It is an arithmetic number, because the mean of its divisors is an integer number (36301599).

Almost surely, 2^72603197 is an apocalyptic number.

It is an amenable number.

72603197 is a deficient number, since it is larger than the sum of its proper divisors (1).

72603197 is an equidigital number, since it uses as much as digits as its factorization.

72603197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 72603197 is about 8520.7509645571. The cubic root of 72603197 is about 417.1752948788.

The spelling of 72603197 in words is "seventy-two million, six hundred three thousand, one hundred ninety-seven".