208874863 has 4 divisors (see below), whose sum is σ = 209669328. Its totient is φ = 208080400.

The previous prime is 208874851. The next prime is 208874873. The reversal of 208874863 is 368478802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368478802 = 2 ⋅184239401.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208874863 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 (208874873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396838 + ... + 397363.

It is an arithmetic number, because the mean of its divisors is an integer number (52417332).

Almost surely, 2^208874863 is an apocalyptic number.

208874863 is a deficient number, since it is larger than the sum of its proper divisors (794465).

208874863 is an equidigital number, since it uses as much as digits as its factorization.

208874863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794464.

The product of its (nonzero) digits is 516096, while the sum is 46.

The square root of 208874863 is about 14452.5036931322. The cubic root of 208874863 is about 593.3287498769.

The spelling of 208874863 in words is "two hundred eight million, eight hundred seventy-four thousand, eight hundred sixty-three".