83566841 has 2 divisors, whose sum is σ = 83566842. Its totient is φ = 83566840.

The previous prime is 83566801. The next prime is 83566867. The reversal of 83566841 is 14866538.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46308025 + 37258816 = 6805^2 + 6104^2 .

It is a cyclic number.

It is not a de Polignac number, because 83566841 - 2²⁶ = 16457977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (83566801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41783420 + 41783421.

It is an arithmetic number, because the mean of its divisors is an integer number (41783421).

Almost surely, 2^83566841 is an apocalyptic number.

It is an amenable number.

83566841 is a deficient number, since it is larger than the sum of its proper divisors (1).

83566841 is an equidigital number, since it uses as much as digits as its factorization.

83566841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 41.

The square root of 83566841 is about 9141.4900864137. The cubic root of 83566841 is about 437.1978273706.

It can be divided in two parts, 835 and 66841, that added together give a palindrome (67676).

The spelling of 83566841 in words is "eighty-three million, five hundred sixty-six thousand, eight hundred forty-one".