72199313 has 2 divisors, whose sum is σ = 72199314. Its totient is φ = 72199312.

The previous prime is 72199307. The next prime is 72199333. The reversal of 72199313 is 31399127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42081169 + 30118144 = 6487^2 + 5488^2 .

It is a cyclic number.

It is not a de Polignac number, because 72199313 - 2¹⁰ = 72198289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72199333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36099656 + 36099657.

It is an arithmetic number, because the mean of its divisors is an integer number (36099657).

Almost surely, 2^72199313 is an apocalyptic number.

It is an amenable number.

72199313 is a deficient number, since it is larger than the sum of its proper divisors (1).

72199313 is an equidigital number, since it uses as much as digits as its factorization.

72199313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206, while the sum is 35.

The square root of 72199313 is about 8497.0178886478. The cubic root of 72199313 is about 416.4002884765.

The spelling of 72199313 in words is "seventy-two million, one hundred ninety-nine thousand, three hundred thirteen".