86273581 has 4 divisors (see below), whose sum is σ = 87687964. Its totient is φ = 84859200.

The previous prime is 86273549. The next prime is 86273599. The reversal of 86273581 is 18537268.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18062500 + 68211081 = 4250^2 + 8259^2 .

It is a cyclic number.

It is not a de Polignac number, because 86273581 - 2⁵ = 86273549 is a prime.

It is a super-2 number, since 2×86273581² = 14886261557127122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86270581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707100 + ... + 707221.

It is an arithmetic number, because the mean of its divisors is an integer number (21921991).

Almost surely, 2^86273581 is an apocalyptic number.

It is an amenable number.

86273581 is a deficient number, since it is larger than the sum of its proper divisors (1414383).

86273581 is a wasteful number, since it uses less digits than its factorization.

86273581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414382.

The product of its digits is 80640, while the sum is 40.

The square root of 86273581 is about 9288.3572821032. The cubic root of 86273581 is about 441.8680581179.

The spelling of 86273581 in words is "eighty-six million, two hundred seventy-three thousand, five hundred eighty-one".