82198775 has 12 divisors (see below), whose sum is σ = 102188400. Its totient is φ = 65590080.

The previous prime is 82198733. The next prime is 82198783. The reversal of 82198775 is 57789128.

It is not a de Polignac number, because 82198775 - 2¹⁰ = 82197751 is a prime.

It is a super-2 number, since 2×82198775² = 13513277223001250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6206 + ... + 14244.

It is an arithmetic number, because the mean of its divisors is an integer number (8515700).

Almost surely, 2^82198775 is an apocalyptic number.

82198775 is a deficient number, since it is larger than the sum of its proper divisors (19989625).

82198775 is a wasteful number, since it uses less digits than its factorization.

82198775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8458 (or 8453 counting only the distinct ones).

The product of its digits is 282240, while the sum is 47.

The square root of 82198775 is about 9066.3540080895. The cubic root of 82198775 is about 434.7989117691.

The spelling of 82198775 in words is "eighty-two million, one hundred ninety-eight thousand, seven hundred seventy-five".