208706164 has 12 divisors (see below), whose sum is σ = 365577604. Its totient is φ = 104255424.

The previous prime is 208706153. The next prime is 208706171. The reversal of 208706164 is 461607802.

It can be written as a sum of positive squares in 2 ways, for example, as 115390564 + 93315600 = 10742^2 + 9660^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19497 + ... + 28240.

Almost surely, 2^208706164 is an apocalyptic number.

It is an amenable number.

208706164 is a deficient number, since it is larger than the sum of its proper divisors (156871440).

208706164 is a wasteful number, since it uses less digits than its factorization.

208706164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48834 (or 48832 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 208706164 is about 14446.6661898169. Note that the first 3 decimals coincide. The cubic root of 208706164 is about 593.1689717134.

The spelling of 208706164 in words is "two hundred eight million, seven hundred six thousand, one hundred sixty-four".