82845197 has 4 divisors (see below), whose sum is σ = 82873596. Its totient is φ = 82816800.

The previous prime is 82845163. The next prime is 82845221. The reversal of 82845197 is 79154828.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20529961 + 62315236 = 4531^2 + 7894^2 .

It is a cyclic number.

It is not a de Polignac number, because 82845197 - 2¹⁰ = 82844173 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 (82845107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9248 + ... + 15849.

It is an arithmetic number, because the mean of its divisors is an integer number (20718399).

Almost surely, 2^82845197 is an apocalyptic number.

It is an amenable number.

82845197 is a deficient number, since it is larger than the sum of its proper divisors (28399).

82845197 is a wasteful number, since it uses less digits than its factorization.

82845197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28398.

The product of its digits is 161280, while the sum is 44.

The square root of 82845197 is about 9101.9336956495. The cubic root of 82845197 is about 435.9357089643.

The spelling of 82845197 in words is "eighty-two million, eight hundred forty-five thousand, one hundred ninety-seven".