208468645 has 32 divisors (see below), whose sum is σ = 321970176. Its totient is φ = 125755200.

The previous prime is 208468643. The next prime is 208468679. The reversal of 208468645 is 546864802.

It is not a de Polignac number, because 208468645 - 2¹ = 208468643 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208468643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3202 + ... + 20668.

It is an arithmetic number, because the mean of its divisors is an integer number (10061568).

Almost surely, 2^208468645 is an apocalyptic number.

It is an amenable number.

208468645 is a deficient number, since it is larger than the sum of its proper divisors (113501531).

208468645 is a wasteful number, since it uses less digits than its factorization.

208468645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17521.

The product of its (nonzero) digits is 368640, while the sum is 43.

The square root of 208468645 is about 14438.4433025171. The cubic root of 208468645 is about 592.9438667484.

The spelling of 208468645 in words is "two hundred eight million, four hundred sixty-eight thousand, six hundred forty-five".