208663146 has 24 divisors (see below), whose sum is σ = 454883520. Its totient is φ = 69126696.

The previous prime is 208663129. The next prime is 208663181. The reversal of 208663146 is 641366802.

208663146 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 208663146.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 32626 + ... + 38493.

It is an arithmetic number, because the mean of its divisors is an integer number (18953480).

Almost surely, 2^208663146 is an apocalyptic number.

208663146 is an abundant number, since it is smaller than the sum of its proper divisors (246220374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

208663146 is a wasteful number, since it uses less digits than its factorization.

208663146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71290 (or 71287 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 208663146 is about 14445.1772574794. The cubic root of 208663146 is about 593.1282147377.

The spelling of 208663146 in words is "two hundred eight million, six hundred sixty-three thousand, one hundred forty-six".