86540173 has 4 divisors (see below), whose sum is σ = 86950528. Its totient is φ = 86129820.

The previous prime is 86540171. The next prime is 86540177. The reversal of 86540173 is 37104568.

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 86540173 - 2¹ = 86540171 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86540171) 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, 204861 + ... + 205282.

It is an arithmetic number, because the mean of its divisors is an integer number (21737632).

Almost surely, 2^86540173 is an apocalyptic number.

It is an amenable number.

86540173 is a deficient number, since it is larger than the sum of its proper divisors (410355).

86540173 is a wasteful number, since it uses less digits than its factorization.

86540173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410354.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 86540173 is about 9302.6970820295. The cubic root of 86540173 is about 442.3227255467.

The spelling of 86540173 in words is "eighty-six million, five hundred forty thousand, one hundred seventy-three".