208688086 has 4 divisors (see below), whose sum is σ = 313032132. Its totient is φ = 104344042.

The previous prime is 208688069. The next prime is 208688101. The reversal of 208688086 is 680886802.

208688086 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52172020 + ... + 52172023.

It is an arithmetic number, because the mean of its divisors is an integer number (78258033).

Almost surely, 2^208688086 is an apocalyptic number.

208688086 is a deficient number, since it is larger than the sum of its proper divisors (104344046).

208688086 is a wasteful number, since it uses less digits than its factorization.

208688086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104344045.

The product of its (nonzero) digits is 294912, while the sum is 46.

The square root of 208688086 is about 14446.0404955822. The cubic root of 208688086 is about 593.1518445747.

The spelling of 208688086 in words is "two hundred eight million, six hundred eighty-eight thousand, eighty-six".