208494711 has 12 divisors (see below), whose sum is σ = 302131440. Its totient is φ = 138547680.

The previous prime is 208494707. The next prime is 208494721. The reversal of 208494711 is 117494802.

It is not a de Polignac number, because 208494711 - 2² = 208494707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208494721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34446 + ... + 40043.

It is an arithmetic number, because the mean of its divisors is an integer number (25177620).

Almost surely, 2^208494711 is an apocalyptic number.

208494711 is a deficient number, since it is larger than the sum of its proper divisors (93636729).

208494711 is a wasteful number, since it uses less digits than its factorization.

208494711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74806 (or 74803 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 208494711 is about 14439.3459339404. The cubic root of 208494711 is about 592.9685787472.

Subtracting from 208494711 its reverse (117494802), we obtain a palindrome (90999909).

The spelling of 208494711 in words is "two hundred eight million, four hundred ninety-four thousand, seven hundred eleven".