82916591 has 2 divisors, whose sum is σ = 82916592. Its totient is φ = 82916590.

The previous prime is 82916557. The next prime is 82916611. The reversal of 82916591 is 19561928.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82916591 - 2⁶ = 82916527 is a prime.

It is a super-3 number, since 3×82916591³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82916791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41458295 + 41458296.

It is an arithmetic number, because the mean of its divisors is an integer number (41458296).

Almost surely, 2^82916591 is an apocalyptic number.

82916591 is a deficient number, since it is larger than the sum of its proper divisors (1).

82916591 is an equidigital number, since it uses as much as digits as its factorization.

82916591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 41.

The square root of 82916591 is about 9105.8547649301. The cubic root of 82916591 is about 436.0608993154.

The spelling of 82916591 in words is "eighty-two million, nine hundred sixteen thousand, five hundred ninety-one".