82198917 has 6 divisors (see below), whose sum is σ = 118731782. Its totient is φ = 54799272.

The previous prime is 82198873. The next prime is 82198931. The reversal of 82198917 is 71989128.

It can be written as a sum of positive squares in only one way, i.e., 82192356 + 6561 = 9066^2 + 81^2 .

It is not a de Polignac number, because 82198917 - 2⁸ = 82198661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82198217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4566598 + ... + 4566615.

Almost surely, 2^82198917 is an apocalyptic number.

It is an amenable number.

82198917 is a deficient number, since it is larger than the sum of its proper divisors (36532865).

82198917 is a wasteful number, since it uses less digits than its factorization.

82198917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9133219 (or 9133216 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The square root of 82198917 is about 9066.3618392385. The cubic root of 82198917 is about 434.7991621435.

The spelling of 82198917 in words is "eighty-two million, one hundred ninety-eight thousand, nine hundred seventeen".