208064945 has 24 divisors (see below), whose sum is σ = 275533440. Its totient is φ = 150717600.

The previous prime is 208064933. The next prime is 208064947. The reversal of 208064945 is 549460802.

208064945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-208064945 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 208064899 and 208064908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208064947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199736 + ... + 200774.

It is an arithmetic number, because the mean of its divisors is an integer number (11480560).

Almost surely, 2^208064945 is an apocalyptic number.

It is an amenable number.

208064945 is a deficient number, since it is larger than the sum of its proper divisors (67468495).

208064945 is a wasteful number, since it uses less digits than its factorization.

208064945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397 (or 1386 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 208064945 is about 14424.4564888941. The cubic root of 208064945 is about 592.5608737090.

The spelling of 208064945 in words is "two hundred eight million, sixty-four thousand, nine hundred forty-five".