86623173 has 24 divisors (see below), whose sum is σ = 153998208. Its totient is φ = 45690912.

The previous prime is 86623171. The next prime is 86623189. The reversal of 86623173 is 37132668.

It is a happy number.

It is not a de Polignac number, because 86623173 - 2¹ = 86623171 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86623171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52065 + ... + 53702.

It is an arithmetic number, because the mean of its divisors is an integer number (6416592).

Almost surely, 2^86623173 is an apocalyptic number.

It is an amenable number.

86623173 is a deficient number, since it is larger than the sum of its proper divisors (67375035).

86623173 is a wasteful number, since it uses less digits than its factorization.

86623173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105793 (or 105790 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 86623173 is about 9307.1570847386. The cubic root of 86623173 is about 442.4640897795.

The spelling of 86623173 in words is "eighty-six million, six hundred twenty-three thousand, one hundred seventy-three".