82198971 has 12 divisors (see below), whose sum is σ = 119822560. Its totient is φ = 54295920.

The previous prime is 82198933. The next prime is 82198993. The reversal of 82198971 is 17989128.

It is not a de Polignac number, because 82198971 - 2¹⁷ = 82067899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82198931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40915 + ... + 42876.

Almost surely, 2^82198971 is an apocalyptic number.

82198971 is a deficient number, since it is larger than the sum of its proper divisors (37623589).

82198971 is a wasteful number, since it uses less digits than its factorization.

82198971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83906 (or 83903 counting only the distinct ones).

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

The square root of 82198971 is about 9066.3648172793. The cubic root of 82198971 is about 434.7992573563.

The spelling of 82198971 in words is "eighty-two million, one hundred ninety-eight thousand, nine hundred seventy-one".