82985237 has 2 divisors, whose sum is σ = 82985238. Its totient is φ = 82985236.

The previous prime is 82985209. The next prime is 82985251. The reversal of 82985237 is 73258928.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60621796 + 22363441 = 7786^2 + 4729^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82985237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82985207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41492618 + 41492619.

It is an arithmetic number, because the mean of its divisors is an integer number (41492619).

Almost surely, 2^82985237 is an apocalyptic number.

It is an amenable number.

82985237 is a deficient number, since it is larger than the sum of its proper divisors (1).

82985237 is an equidigital number, since it uses as much as digits as its factorization.

82985237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 82985237 is about 9109.6233182278. The cubic root of 82985237 is about 436.1812032628.

The spelling of 82985237 in words is "eighty-two million, nine hundred eighty-five thousand, two hundred thirty-seven".