82173827 has 2 divisors, whose sum is σ = 82173828. Its totient is φ = 82173826.

The previous prime is 82173821. The next prime is 82173829. The reversal of 82173827 is 72837128.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82173827 - 2¹⁰ = 82172803 is a prime.

Together with 82173829, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82173821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41086913 + 41086914.

It is an arithmetic number, because the mean of its divisors is an integer number (41086914).

Almost surely, 2^82173827 is an apocalyptic number.

82173827 is a deficient number, since it is larger than the sum of its proper divisors (1).

82173827 is an equidigital number, since it uses as much as digits as its factorization.

82173827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 38.

The square root of 82173827 is about 9064.9780474086. The cubic root of 82173827 is about 434.7549189770.

The spelling of 82173827 in words is "eighty-two million, one hundred seventy-three thousand, eight hundred twenty-seven".