180745 has 8 divisors (see below), whose sum is σ = 222984. Its totient is φ = 140544.

The previous prime is 180731. The next prime is 180749. The reversal of 180745 is 547081.

It can be written as a sum of positive squares in 4 ways, for example, as 95481 + 85264 = 309^2 + 292^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 180745 - 2⁷ = 180617 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (180749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304 + ... + 673.

It is an arithmetic number, because the mean of its divisors is an integer number (27873).

2¹⁸⁰⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

180745 is a deficient number, since it is larger than the sum of its proper divisors (42239).

180745 is an equidigital number, since it uses as much as digits as its factorization.

180745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 180745 is about 425.1411530304. The cubic root of 180745 is about 56.5399513817.

The spelling of 180745 in words is "one hundred eighty thousand, seven hundred forty-five".