208660916 has 12 divisors (see below), whose sum is σ = 377748420. Its totient is φ = 100732800.

The previous prime is 208660913. The next prime is 208660919. The reversal of 208660916 is 619066802.

It is an interprime number because it is at equal distance from previous prime (208660913) and next prime (208660919).

It can be written as a sum of positive squares in 2 ways, for example, as 92236816 + 116424100 = 9604^2 + 10790^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 208660916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208660913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 899285 + ... + 899516.

It is an arithmetic number, because the mean of its divisors is an integer number (31479035).

Almost surely, 2^208660916 is an apocalyptic number.

It is an amenable number.

208660916 is a deficient number, since it is larger than the sum of its proper divisors (169087504).

208660916 is a wasteful number, since it uses less digits than its factorization.

208660916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798834 (or 1798832 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 208660916 is about 14445.1000688815. The cubic root of 208660916 is about 593.1261017937.

The spelling of 208660916 in words is "two hundred eight million, six hundred sixty thousand, nine hundred sixteen".