72734569 has 2 divisors, whose sum is σ = 72734570. Its totient is φ = 72734568.

The previous prime is 72734549. The next prime is 72734593. The reversal of 72734569 is 96543727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64208169 + 8526400 = 8013^2 + 2920^2 .

It is a cyclic number.

It is not a de Polignac number, because 72734569 - 2⁵ = 72734537 is a prime.

It is a super-2 number, since 2×72734569² = 10580635055231522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72734539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36367284 + 36367285.

It is an arithmetic number, because the mean of its divisors is an integer number (36367285).

Almost surely, 2^72734569 is an apocalyptic number.

It is an amenable number.

72734569 is a deficient number, since it is larger than the sum of its proper divisors (1).

72734569 is an equidigital number, since it uses as much as digits as its factorization.

72734569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 43.

The square root of 72734569 is about 8528.4564254031. The cubic root of 72734569 is about 417.4267628238.

The spelling of 72734569 in words is "seventy-two million, seven hundred thirty-four thousand, five hundred sixty-nine".