208065287 has 8 divisors (see below), whose sum is σ = 215488512. Its totient is φ = 200767000.

The previous prime is 208065281. The next prime is 208065311. The reversal of 208065287 is 782560802.

208065287 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 a cyclic number.

It is not a de Polignac number, because 208065287 - 2¹⁶ = 207999751 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 208065287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208065281) 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, 27839 + ... + 34512.

It is an arithmetic number, because the mean of its divisors is an integer number (26936064).

Almost surely, 2^208065287 is an apocalyptic number.

208065287 is a deficient number, since it is larger than the sum of its proper divisors (7423225).

208065287 is an equidigital number, since it uses as much as digits as its factorization.

208065287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62469.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 208065287 is about 14424.4683437553. The cubic root of 208065287 is about 592.5611983764.

The spelling of 208065287 in words is "two hundred eight million, sixty-five thousand, two hundred eighty-seven".