86087173 has 4 divisors (see below), whose sum is σ = 86153760. Its totient is φ = 86020588.

The previous prime is 86087159. The next prime is 86087189. The reversal of 86087173 is 37178068.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86087173 - 2²¹ = 83990021 is a prime.

It is a super-2 number, since 2×86087173² = 14822002710263858, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86087153) 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, 31315 + ... + 33952.

It is an arithmetic number, because the mean of its divisors is an integer number (21538440).

Almost surely, 2^86087173 is an apocalyptic number.

It is an amenable number.

86087173 is a deficient number, since it is larger than the sum of its proper divisors (66587).

86087173 is a wasteful number, since it uses less digits than its factorization.

86087173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66586.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 86087173 is about 9278.3173582283. The cubic root of 86087173 is about 441.5495862123.

The spelling of 86087173 in words is "eighty-six million, eighty-seven thousand, one hundred seventy-three".