86663826 has 36 divisors (see below), whose sum is σ = 198189342. Its totient is φ = 27365472.

The previous prime is 86663789. The next prime is 86663827. The reversal of 86663826 is 62836668.

It can be written as a sum of positive squares in only one way, i.e., 80084601 + 6579225 = 8949^2 + 2565^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86663827) 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 in 17 ways as a sum of consecutive naturals, for example, 171 + ... + 13166.

Almost surely, 2^86663826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86663826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99094671).

86663826 is an abundant number, since it is smaller than the sum of its proper divisors (111525516).

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

86663826 is a wasteful number, since it uses less digits than its factorization.

86663826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13383 (or 13361 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 86663826 is about 9309.3407929885. The cubic root of 86663826 is about 442.5332963550.

The spelling of 86663826 in words is "eighty-six million, six hundred sixty-three thousand, eight hundred twenty-six".