816768079 has 2 divisors, whose sum is σ = 816768080. Its totient is φ = 816768078.

The previous prime is 816768023. The next prime is 816768089. The reversal of 816768079 is 970867618.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 816768079 - 2⁷ = 816767951 is a prime.

It is a super-2 number, since 2×816768079² = 1334220189746700482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (816768089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408384039 + 408384040.

It is an arithmetic number, because the mean of its divisors is an integer number (408384040).

Almost surely, 2^816768079 is an apocalyptic number.

816768079 is a deficient number, since it is larger than the sum of its proper divisors (1).

816768079 is an equidigital number, since it uses as much as digits as its factorization.

816768079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 816768079 is about 28579.1546236063. The cubic root of 816768079 is about 934.7588496071.

The spelling of 816768079 in words is "eight hundred sixteen million, seven hundred sixty-eight thousand, seventy-nine".