86491518 has 8 divisors (see below), whose sum is σ = 172983048. Its totient is φ = 28830504.

The previous prime is 86491511. The next prime is 86491579. The reversal of 86491518 is 81519468.

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

86491518 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 86491518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86491511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7207621 + ... + 7207632.

It is an arithmetic number, because the mean of its divisors is an integer number (21622881).

Almost surely, 2^86491518 is an apocalyptic number.

86491518 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

86491518 is a wasteful number, since it uses less digits than its factorization.

86491518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14415258.

The product of its digits is 69120, while the sum is 42.

The square root of 86491518 is about 9300.0816125451. The cubic root of 86491518 is about 442.2398151250.

The spelling of 86491518 in words is "eighty-six million, four hundred ninety-one thousand, five hundred eighteen".