82197967 has 2 divisors, whose sum is σ = 82197968. Its totient is φ = 82197966.

The previous prime is 82197959. The next prime is 82198001. The reversal of 82197967 is 76979128.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82197967 - 2³ = 82197959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82197967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82197937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41098983 + 41098984.

It is an arithmetic number, because the mean of its divisors is an integer number (41098984).

Almost surely, 2^82197967 is an apocalyptic number.

82197967 is a deficient number, since it is larger than the sum of its proper divisors (1).

82197967 is an equidigital number, since it uses as much as digits as its factorization.

82197967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 49.

The square root of 82197967 is about 9066.3094476198. The cubic root of 82197967 is about 434.7974870980.

The spelling of 82197967 in words is "eighty-two million, one hundred ninety-seven thousand, nine hundred sixty-seven".