84696181 has 2 divisors, whose sum is σ = 84696182. Its totient is φ = 84696180.

The previous prime is 84696169. The next prime is 84696187. The reversal of 84696181 is 18169648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84015556 + 680625 = 9166^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 84696181 - 2¹⁵ = 84663413 is a prime.

It is a super-2 number, since 2×84696181² = 14346886151969522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84696187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42348090 + 42348091.

It is an arithmetic number, because the mean of its divisors is an integer number (42348091).

Almost surely, 2^84696181 is an apocalyptic number.

It is an amenable number.

84696181 is a deficient number, since it is larger than the sum of its proper divisors (1).

84696181 is an equidigital number, since it uses as much as digits as its factorization.

84696181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 43.

The square root of 84696181 is about 9203.0528087152. The cubic root of 84696181 is about 439.1584828451.

The spelling of 84696181 in words is "eighty-four million, six hundred ninety-six thousand, one hundred eighty-one".