208224865 has 16 divisors (see below), whose sum is σ = 265161600. Its totient is φ = 156631552.

The previous prime is 208224859. The next prime is 208224869. The reversal of 208224865 is 568422802.

It is a cyclic number.

It is not a de Polignac number, because 208224865 - 2⁹ = 208224353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (208224869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8560 + ... + 22129.

It is an arithmetic number, because the mean of its divisors is an integer number (16572600).

Almost surely, 2^208224865 is an apocalyptic number.

It is an amenable number.

208224865 is a deficient number, since it is larger than the sum of its proper divisors (56936735).

208224865 is a wasteful number, since it uses less digits than its factorization.

208224865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30776.

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 208224865 is about 14429.9987872487. The cubic root of 208224865 is about 592.7126501443.

The spelling of 208224865 in words is "two hundred eight million, two hundred twenty-four thousand, eight hundred sixty-five".