208490063 has 2 divisors, whose sum is σ = 208490064. Its totient is φ = 208490062.

The previous prime is 208490053. The next prime is 208490069. The reversal of 208490063 is 360094802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 208490063 - 2⁴ = 208490047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208490069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104245031 + 104245032.

It is an arithmetic number, because the mean of its divisors is an integer number (104245032).

Almost surely, 2^208490063 is an apocalyptic number.

208490063 is a deficient number, since it is larger than the sum of its proper divisors (1).

208490063 is an equidigital number, since it uses as much as digits as its factorization.

208490063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 208490063 is about 14439.1849839248. The cubic root of 208490063 is about 592.9641723390.

The spelling of 208490063 in words is "two hundred eight million, four hundred ninety thousand, sixty-three".