86866073 has 12 divisors (see below), whose sum is σ = 106993332. Its totient is φ = 70076160.

The previous prime is 86866067. The next prime is 86866163. The reversal of 86866073 is 37066868.

It can be written as a sum of positive squares in 2 ways, for example, as 51380224 + 35485849 = 7168^2 + 5957^2 .

It is not a de Polignac number, because 86866073 - 2¹⁰ = 86865049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86866573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51308 + ... + 52973.

It is an arithmetic number, because the mean of its divisors is an integer number (8916111).

Almost surely, 2^86866073 is an apocalyptic number.

It is an amenable number.

86866073 is a deficient number, since it is larger than the sum of its proper divisors (20127259).

86866073 is a wasteful number, since it uses less digits than its factorization.

86866073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104312 (or 104305 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 86866073 is about 9320.1970472732. The cubic root of 86866073 is about 442.8772749334.

The spelling of 86866073 in words is "eighty-six million, eight hundred sixty-six thousand, seventy-three".