208145 has 16 divisors (see below), whose sum is σ = 301440. Its totient is φ = 134784.

The previous prime is 208141. The next prime is 208147. The reversal of 208145 is 541802.

It is a cyclic number.

It is not a de Polignac number, because 208145 - 2² = 208141 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 208145.

It is not an unprimeable number, because it can be changed into a prime (208141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 509 + ... + 821.

It is an arithmetic number, because the mean of its divisors is an integer number (18840).

2²⁰⁸¹⁴⁵ is an apocalyptic number.

It is an amenable number.

208145 is a deficient number, since it is larger than the sum of its proper divisors (93295).

208145 is a wasteful number, since it uses less digits than its factorization.

208145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 208145 is about 456.2291091108. The cubic root of 208145 is about 59.2636861807.

Adding to 208145 its reverse (541802), we get a palindrome (749947).

It can be divided in two parts, 208 and 145, that added together give a palindrome (353).

The spelling of 208145 in words is "two hundred eight thousand, one hundred forty-five".