86443580 has 48 divisors (see below), whose sum is σ = 187125120. Its totient is φ = 33523200.

The previous prime is 86443579. The next prime is 86443603. The reversal of 86443580 is 8534468.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222026 + ... + 222414.

It is an arithmetic number, because the mean of its divisors is an integer number (3898440).

Almost surely, 2^86443580 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 86443580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93562560).

86443580 is an abundant number, since it is smaller than the sum of its proper divisors (100681540).

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

86443580 is a wasteful number, since it uses less digits than its factorization.

86443580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 86443580 is about 9297.5039661191. The cubic root of 86443580 is about 442.1580960899.

It can be divided in two parts, 864 and 43580, that added together give a palindrome (44444).

The spelling of 86443580 in words is "eighty-six million, four hundred forty-three thousand, five hundred eighty".