208564934 has 8 divisors (see below), whose sum is σ = 313977648. Its totient is φ = 103905720.

The previous prime is 208564927. The next prime is 208564963. The reversal of 208564934 is 439465802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 208564891 and 208564900.

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, 187682 + ... + 188789.

It is an arithmetic number, because the mean of its divisors is an integer number (39247206).

Almost surely, 2^208564934 is an apocalyptic number.

208564934 is a deficient number, since it is larger than the sum of its proper divisors (105412714).

208564934 is a wasteful number, since it uses less digits than its factorization.

208564934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376750.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 208564934 is about 14441.7773836879. Note that the first 3 decimals coincide. The cubic root of 208564934 is about 593.0351437586.

The spelling of 208564934 in words is "two hundred eight million, five hundred sixty-four thousand, nine hundred thirty-four".