86668849 has 8 divisors (see below), whose sum is σ = 90740160. Its totient is φ = 82669776.

The previous prime is 86668801. The next prime is 86668891. The reversal of 86668849 is 94886668.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86668849 is a prime.

It is a super-2 number, since 2×86668849² = 15022978773969602, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86668849.

It is not an unprimeable number, because it can be changed into a prime (86665849) 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 in 7 ways as a sum of consecutive naturals, for example, 15597 + ... + 20410.

It is an arithmetic number, because the mean of its divisors is an integer number (11342520).

Almost surely, 2^86668849 is an apocalyptic number.

It is an amenable number.

86668849 is a deficient number, since it is larger than the sum of its proper divisors (4071311).

86668849 is a wasteful number, since it uses less digits than its factorization.

86668849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36119.

The product of its digits is 3981312, while the sum is 55.

The square root of 86668849 is about 9309.6105718768. The cubic root of 86668849 is about 442.5418458729.

The spelling of 86668849 in words is "eighty-six million, six hundred sixty-eight thousand, eight hundred forty-nine".