82185707 has 2 divisors, whose sum is σ = 82185708. Its totient is φ = 82185706.

The previous prime is 82185679. The next prime is 82185709. The reversal of 82185707 is 70758128.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82185707 - 2²⁶ = 15076843 is a prime.

Together with 82185709, 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 (82185709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41092853 + 41092854.

It is an arithmetic number, because the mean of its divisors is an integer number (41092854).

Almost surely, 2^82185707 is an apocalyptic number.

82185707 is a deficient number, since it is larger than the sum of its proper divisors (1).

82185707 is an equidigital number, since it uses as much as digits as its factorization.

82185707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 82185707 is about 9065.6332928263. The cubic root of 82185707 is about 434.7758690360.

The spelling of 82185707 in words is "eighty-two million, one hundred eighty-five thousand, seven hundred seven".