86606249 has 2 divisors, whose sum is σ = 86606250. Its totient is φ = 86606248.

The previous prime is 86606243. The next prime is 86606291. The reversal of 86606249 is 94260668.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83850649 + 2755600 = 9157^2 + 1660^2 .

It is a cyclic number.

It is not a de Polignac number, because 86606249 - 2⁸ = 86605993 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 (86606243) 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, 43303124 + 43303125.

It is an arithmetic number, because the mean of its divisors is an integer number (43303125).

Almost surely, 2^86606249 is an apocalyptic number.

It is an amenable number.

86606249 is a deficient number, since it is larger than the sum of its proper divisors (1).

86606249 is an equidigital number, since it uses as much as digits as its factorization.

86606249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 86606249 is about 9306.2478475484. The cubic root of 86606249 is about 442.4352724330.

The spelling of 86606249 in words is "eighty-six million, six hundred six thousand, two hundred forty-nine".