85988173 has 4 divisors (see below), whose sum is σ = 86248288. Its totient is φ = 85728060.

The previous prime is 85988153. The next prime is 85988209. The reversal of 85988173 is 37188958.

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 85988173 - 2¹³ = 85979981 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 (85988153) 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, 129561 + ... + 130222.

It is an arithmetic number, because the mean of its divisors is an integer number (21562072).

Almost surely, 2^85988173 is an apocalyptic number.

It is an amenable number.

85988173 is a deficient number, since it is larger than the sum of its proper divisors (260115).

85988173 is a wasteful number, since it uses less digits than its factorization.

85988173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260114.

The product of its digits is 483840, while the sum is 49.

The square root of 85988173 is about 9272.9808044663. The cubic root of 85988173 is about 441.3802610388.

The spelling of 85988173 in words is "eighty-five million, nine hundred eighty-eight thousand, one hundred seventy-three".