86810181 has 8 divisors (see below), whose sum is σ = 117708960. Its totient is φ = 56892432.

The previous prime is 86810179. The next prime is 86810197. The reversal of 86810181 is 18101868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86810181 - 2¹ = 86810179 is a prime.

It is a super-2 number, since 2×86810181² = 15072015050505522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86810681) 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 7 ways as a sum of consecutive naturals, for example, 245050 + ... + 245403.

It is an arithmetic number, because the mean of its divisors is an integer number (14713620).

Almost surely, 2^86810181 is an apocalyptic number.

It is an amenable number.

86810181 is a deficient number, since it is larger than the sum of its proper divisors (30898779).

86810181 is a wasteful number, since it uses less digits than its factorization.

86810181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490515.

The product of its (nonzero) digits is 3072, while the sum is 33.

The square root of 86810181 is about 9317.1981303394. The cubic root of 86810181 is about 442.7822681155.

The spelling of 86810181 in words is "eighty-six million, eight hundred ten thousand, one hundred eighty-one".