672185 has 4 divisors (see below), whose sum is σ = 806628. Its totient is φ = 537744.

The previous prime is 672181. The next prime is 672193. The reversal of 672185 is 581276.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 355216 + 316969 = 596^2 + 563^2 .

It is a cyclic number.

It is not a de Polignac number, because 672185 - 2² = 672181 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672181) 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, 67214 + ... + 67223.

It is an arithmetic number, because the mean of its divisors is an integer number (201657).

2⁶⁷²¹⁸⁵ is an apocalyptic number.

It is an amenable number.

672185 is a deficient number, since it is larger than the sum of its proper divisors (134443).

672185 is a wasteful number, since it uses less digits than its factorization.

672185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134442.

The product of its digits is 3360, while the sum is 29.

The square root of 672185 is about 819.8688919577. The cubic root of 672185 is about 87.5984198682.

Subtracting from 672185 its reverse (581276), we obtain a palindrome (90909).

The spelling of 672185 in words is "six hundred seventy-two thousand, one hundred eighty-five".