180706 has 4 divisors (see below), whose sum is σ = 271062.
Its totient is φ = 90352.
The previous prime is 180701. The next prime is 180731. The reversal of 180706 is 607081.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 180625 + 81 = 425^2 + 9^2
It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is not an unprimeable number, because it can be changed into a prime (180701) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45175 + ... + 45178.
2180706 is an apocalyptic number.
180706 is a deficient number, since it is larger than the sum of its proper divisors (90356).
180706 is an equidigital number, since it uses as much as digits as its factorization.
180706 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 90355.
The product of its (nonzero) digits is 336, while the sum is 22.
The square root of 180706 is about 425.0952834365.
The cubic root of 180706 is about 56.5358844795.
Adding to 180706 its reverse (607081), we get a palindrome (787787).
The spelling of 180706 in words is "one hundred eighty thousand, seven hundred six".