208814861 has 8 divisors (see below), whose sum is σ = 218078784. Its totient is φ = 199566400.

The previous prime is 208814857. The next prime is 208814873. The reversal of 208814861 is 168418802.

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

It is not a de Polignac number, because 208814861 - 2² = 208814857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208814891) 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, 30245 + ... + 36501.

It is an arithmetic number, because the mean of its divisors is an integer number (27259848).

Almost surely, 2^208814861 is an apocalyptic number.

It is an amenable number.

208814861 is a deficient number, since it is larger than the sum of its proper divisors (9263923).

208814861 is a wasteful number, since it uses less digits than its factorization.

208814861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7731.

The product of its (nonzero) digits is 24576, while the sum is 38.

The square root of 208814861 is about 14450.4277099330. The cubic root of 208814861 is about 593.2719306557.

The spelling of 208814861 in words is "two hundred eight million, eight hundred fourteen thousand, eight hundred sixty-one".