72796573 has 2 divisors, whose sum is σ = 72796574. Its totient is φ = 72796572.

The previous prime is 72796547. The next prime is 72796597. The reversal of 72796573 is 37569727.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67026969 + 5769604 = 8187^2 + 2402^2 .

It is a cyclic number.

It is not a de Polignac number, because 72796573 - 2²⁵ = 39242141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72796523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36398286 + 36398287.

It is an arithmetic number, because the mean of its divisors is an integer number (36398287).

Almost surely, 2^72796573 is an apocalyptic number.

It is an amenable number.

72796573 is a deficient number, since it is larger than the sum of its proper divisors (1).

72796573 is an equidigital number, since it uses as much as digits as its factorization.

72796573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 555660, while the sum is 46.

The square root of 72796573 is about 8532.0907754196. The cubic root of 72796573 is about 417.5453436594.

The spelling of 72796573 in words is "seventy-two million, seven hundred ninety-six thousand, five hundred seventy-three".