72859313 has 2 divisors, whose sum is σ = 72859314. Its totient is φ = 72859312.

The previous prime is 72859301. The next prime is 72859343. The reversal of 72859313 is 31395827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40857664 + 32001649 = 6392^2 + 5657^2 .

It is a cyclic number.

It is not a de Polignac number, because 72859313 - 2⁶ = 72859249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (72859343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36429656 + 36429657.

It is an arithmetic number, because the mean of its divisors is an integer number (36429657).

Almost surely, 2^72859313 is an apocalyptic number.

It is an amenable number.

72859313 is a deficient number, since it is larger than the sum of its proper divisors (1).

72859313 is an equidigital number, since it uses as much as digits as its factorization.

72859313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 72859313 is about 8535.7666908134. The cubic root of 72859313 is about 417.6652635561.

The spelling of 72859313 in words is "seventy-two million, eight hundred fifty-nine thousand, three hundred thirteen".