72820259 has 2 divisors, whose sum is σ = 72820260. Its totient is φ = 72820258.

The previous prime is 72820213. The next prime is 72820283. The reversal of 72820259 is 95202827.

It is a strong prime.

It is an emirp because it is prime and its reverse (95202827) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72820259 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72820859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36410129 + 36410130.

It is an arithmetic number, because the mean of its divisors is an integer number (36410130).

Almost surely, 2^72820259 is an apocalyptic number.

72820259 is a deficient number, since it is larger than the sum of its proper divisors (1).

72820259 is an equidigital number, since it uses as much as digits as its factorization.

72820259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 72820259 is about 8533.4787162095. The cubic root of 72820259 is about 417.5906246672.

The spelling of 72820259 in words is "seventy-two million, eight hundred twenty thousand, two hundred fifty-nine".