208260681 has 8 divisors (see below), whose sum is σ = 277821600. Its totient is φ = 138770112.

The previous prime is 208260677. The next prime is 208260683. The reversal of 208260681 is 186062802.

208260681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 208260681 - 2² = 208260677 is a prime.

It is a super-2 number, since 2×208260681² = 86745022501167522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (208260683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10240 + ... + 22833.

It is an arithmetic number, because the mean of its divisors is an integer number (34727700).

Almost surely, 2^208260681 is an apocalyptic number.

It is an amenable number.

208260681 is a deficient number, since it is larger than the sum of its proper divisors (69560919).

208260681 is a wasteful number, since it uses less digits than its factorization.

208260681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35175.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 208260681 is about 14431.2397596326. The cubic root of 208260681 is about 592.7466316435.

The spelling of 208260681 in words is "two hundred eight million, two hundred sixty thousand, six hundred eighty-one".