208742068 has 12 divisors (see below), whose sum is σ = 366240420. Its totient is φ = 104101952.

The previous prime is 208742057. The next prime is 208742069. The reversal of 208742068 is 860247802.

It can be written as a sum of positive squares in 2 ways, for example, as 62283664 + 146458404 = 7892^2 + 12102^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208742069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65521 + ... + 68632.

It is an arithmetic number, because the mean of its divisors is an integer number (30520035).

Almost surely, 2^208742068 is an apocalyptic number.

It is an amenable number.

208742068 is a deficient number, since it is larger than the sum of its proper divisors (157498352).

208742068 is a wasteful number, since it uses less digits than its factorization.

208742068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134546 (or 134544 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 208742068 is about 14447.9087760132. The cubic root of 208742068 is about 593.2029843131.

The spelling of 208742068 in words is "two hundred eight million, seven hundred forty-two thousand, sixty-eight".