72299323 has 2 divisors, whose sum is σ = 72299324. Its totient is φ = 72299322.

The previous prime is 72299303. The next prime is 72299363. The reversal of 72299323 is 32399227.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72299323 is a prime.

It is not a weakly prime, because it can be changed into another prime (72299303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36149661 + 36149662.

It is an arithmetic number, because the mean of its divisors is an integer number (36149662).

Almost surely, 2^72299323 is an apocalyptic number.

72299323 is a deficient number, since it is larger than the sum of its proper divisors (1).

72299323 is an equidigital number, since it uses as much as digits as its factorization.

72299323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 37.

The square root of 72299323 is about 8502.9008579425. The cubic root of 72299323 is about 416.5924647243.

The spelling of 72299323 in words is "seventy-two million, two hundred ninety-nine thousand, three hundred twenty-three".