86581326 has 64 divisors (see below), whose sum is σ = 195987456. Its totient is φ = 25315200.

The previous prime is 86581321. The next prime is 86581331. The reversal of 86581326 is 62318568.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (86581321) and next prime (86581331).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86581321) 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, 147205 + ... + 147791.

It is an arithmetic number, because the mean of its divisors is an integer number (3062304).

Almost surely, 2^86581326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86581326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97993728).

86581326 is an abundant number, since it is smaller than the sum of its proper divisors (109406130).

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

86581326 is a wasteful number, since it uses less digits than its factorization.

86581326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697.

The product of its digits is 69120, while the sum is 39.

The square root of 86581326 is about 9304.9087045494. The cubic root of 86581326 is about 442.3928279507.

The spelling of 86581326 in words is "eighty-six million, five hundred eighty-one thousand, three hundred twenty-six".