72837797 has 2 divisors, whose sum is σ = 72837798. Its totient is φ = 72837796.

The previous prime is 72837769. The next prime is 72837799. The reversal of 72837797 is 79773827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49547521 + 23290276 = 7039^2 + 4826^2 .

It is a cyclic number.

It is not a de Polignac number, because 72837797 - 2²⁴ = 56060581 is a prime.

Together with 72837799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72837799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36418898 + 36418899.

It is an arithmetic number, because the mean of its divisors is an integer number (36418899).

Almost surely, 2^72837797 is an apocalyptic number.

It is an amenable number.

72837797 is a deficient number, since it is larger than the sum of its proper divisors (1).

72837797 is an equidigital number, since it uses as much as digits as its factorization.

72837797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1037232, while the sum is 50.

The square root of 72837797 is about 8534.5062540255. The cubic root of 72837797 is about 417.6241460920.

The spelling of 72837797 in words is "seventy-two million, eight hundred thirty-seven thousand, seven hundred ninety-seven".