816878597 has 2 divisors, whose sum is σ = 816878598. Its totient is φ = 816878596.

The previous prime is 816878567. The next prime is 816878627. The reversal of 816878597 is 795878618.

It is a balanced prime because it is at equal distance from previous prime (816878567) and next prime (816878627).

It can be written as a sum of positive squares in only one way, i.e., 629708836 + 187169761 = 25094^2 + 13681^2 .

It is a cyclic number.

It is not a de Polignac number, because 816878597 - 2¹⁴ = 816862213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (816878507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408439298 + 408439299.

It is an arithmetic number, because the mean of its divisors is an integer number (408439299).

Almost surely, 2^816878597 is an apocalyptic number.

It is an amenable number.

816878597 is a deficient number, since it is larger than the sum of its proper divisors (1).

816878597 is an equidigital number, since it uses as much as digits as its factorization.

816878597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6773760, while the sum is 59.

The square root of 816878597 is about 28581.0881003506. The cubic root of 816878597 is about 934.8010088696.

The spelling of 816878597 in words is "eight hundred sixteen million, eight hundred seventy-eight thousand, five hundred ninety-seven".