208669264 has 20 divisors (see below), whose sum is σ = 404522100. Its totient is φ = 104276480.

The previous prime is 208669247. The next prime is 208669291. The reversal of 208669264 is 462966802.

It can be written as a sum of positive squares in 2 ways, for example, as 106254864 + 102414400 = 10308^2 + 10120^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 208669264.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49512 + ... + 53560.

It is an arithmetic number, because the mean of its divisors is an integer number (20226105).

Almost surely, 2^208669264 is an apocalyptic number.

It is an amenable number.

208669264 is a deficient number, since it is larger than the sum of its proper divisors (195852836).

208669264 is a wasteful number, since it uses less digits than its factorization.

208669264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7278 (or 7272 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 208669264 is about 14445.3890221067. The cubic root of 208669264 is about 593.1340115175.

The spelling of 208669264 in words is "two hundred eight million, six hundred sixty-nine thousand, two hundred sixty-four".