86568636 has 96 divisors (see below), whose sum is σ = 265144320. Its totient is φ = 21297600.

The previous prime is 86568631. The next prime is 86568653. The reversal of 86568636 is 63686568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86568631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15091 + ... + 20021.

It is an arithmetic number, because the mean of its divisors is an integer number (2761920).

Almost surely, 2^86568636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86568636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132572160).

86568636 is an abundant number, since it is smaller than the sum of its proper divisors (178575684).

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

86568636 is a wasteful number, since it uses less digits than its factorization.

86568636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975 (or 4973 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 48.

The square root of 86568636 is about 9304.2267814150. The cubic root of 86568636 is about 442.3712134389.

The spelling of 86568636 in words is "eighty-six million, five hundred sixty-eight thousand, six hundred thirty-six".