82800997 has 2 divisors, whose sum is σ = 82800998. Its totient is φ = 82800996.

The previous prime is 82800961. The next prime is 82801009. The reversal of 82800997 is 79900828.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61952641 + 20848356 = 7871^2 + 4566^2 .

It is a cyclic number.

It is not a de Polignac number, because 82800997 - 2¹⁵ = 82768229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82800947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41400498 + 41400499.

It is an arithmetic number, because the mean of its divisors is an integer number (41400499).

Almost surely, 2^82800997 is an apocalyptic number.

It is an amenable number.

82800997 is a deficient number, since it is larger than the sum of its proper divisors (1).

82800997 is an equidigital number, since it uses as much as digits as its factorization.

82800997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 82800997 is about 9099.5053162246. The cubic root of 82800997 is about 435.8581676110.

The spelling of 82800997 in words is "eighty-two million, eight hundred thousand, nine hundred ninety-seven".