86897181 has 8 divisors (see below), whose sum is σ = 132414784. Its totient is φ = 49655520.

The previous prime is 86897171. The next prime is 86897207. The reversal of 86897181 is 18179868.

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

It is not a de Polignac number, because 86897181 - 2¹⁰ = 86896157 is a prime.

It is a super-2 number, since 2×86897181² = 15102240131493522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86897181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86897141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2068960 + ... + 2069001.

It is an arithmetic number, because the mean of its divisors is an integer number (16551848).

Almost surely, 2^86897181 is an apocalyptic number.

It is an amenable number.

86897181 is a deficient number, since it is larger than the sum of its proper divisors (45517603).

86897181 is a wasteful number, since it uses less digits than its factorization.

86897181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137971.

The product of its digits is 193536, while the sum is 48.

The square root of 86897181 is about 9321.8657467269. The cubic root of 86897181 is about 442.9301355479.

It can be divided in two parts, 86897 and 181, that added together give a palindrome (87078).

The spelling of 86897181 in words is "eighty-six million, eight hundred ninety-seven thousand, one hundred eighty-one".