86665450 has 12 divisors (see below), whose sum is σ = 161197830. Its totient is φ = 34666160.

The previous prime is 86665417. The next prime is 86665451. The reversal of 86665450 is 5456668.

It can be written as a sum of positive squares in 3 ways, for example, as 72982849 + 13682601 = 8543^2 + 3699^2 .

It is not an unprimeable number, because it can be changed into a prime (86665451) 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 5 ways as a sum of consecutive naturals, for example, 866605 + ... + 866704.

Almost surely, 2^86665450 is an apocalyptic number.

86665450 is a deficient number, since it is larger than the sum of its proper divisors (74532380).

86665450 is a wasteful number, since it uses less digits than its factorization.

86665450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733321 (or 1733316 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 86665450 is about 9309.4280168010. The cubic root of 86665450 is about 442.5360605594.

The spelling of 86665450 in words is "eighty-six million, six hundred sixty-five thousand, four hundred fifty".