72807853 has 2 divisors, whose sum is σ = 72807854. Its totient is φ = 72807852.

The previous prime is 72807827. The next prime is 72807881. The reversal of 72807853 is 35870827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39664804 + 33143049 = 6298^2 + 5757^2 .

It is a cyclic number.

It is not a de Polignac number, because 72807853 - 2²⁵ = 39253421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72807883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36403926 + 36403927.

It is an arithmetic number, because the mean of its divisors is an integer number (36403927).

Almost surely, 2^72807853 is an apocalyptic number.

It is an amenable number.

72807853 is a deficient number, since it is larger than the sum of its proper divisors (1).

72807853 is an equidigital number, since it uses as much as digits as its factorization.

72807853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 72807853 is about 8532.7517835690. The cubic root of 72807853 is about 417.5669090896.

The spelling of 72807853 in words is "seventy-two million, eight hundred seven thousand, eight hundred fifty-three".