86866866 has 12 divisors (see below), whose sum is σ = 188211582. Its totient is φ = 28955616.

The previous prime is 86866859. The next prime is 86866877. The reversal of 86866866 is 66866868.

It can be written as a sum of positive squares in only one way, i.e., 85100625 + 1766241 = 9225^2 + 1329^2 .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2412951 + ... + 2412986.

Almost surely, 2^86866866 is an apocalyptic number.

86866866 is an abundant number, since it is smaller than the sum of its proper divisors (101344716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86866866 is a wasteful number, since it uses less digits than its factorization.

86866866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4825945 (or 4825942 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 86866866 is about 9320.2395891951. The cubic root of 86866866 is about 442.8786226042.

The spelling of 86866866 in words is "eighty-six million, eight hundred sixty-six thousand, eight hundred sixty-six".