208680955 has 48 divisors (see below), whose sum is σ = 314694720. Its totient is φ = 132050688.

The previous prime is 208680937. The next prime is 208680991. The reversal of 208680955 is 559086802.

It is not a de Polignac number, because 208680955 - 2¹⁷ = 208549883 is a prime.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 162777 + ... + 164053.

It is an arithmetic number, because the mean of its divisors is an integer number (6556140).

Almost surely, 2^208680955 is an apocalyptic number.

208680955 is a deficient number, since it is larger than the sum of its proper divisors (106013765).

208680955 is a wasteful number, since it uses less digits than its factorization.

208680955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348 (or 1341 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 208680955 is about 14445.7936784380. The cubic root of 208680955 is about 593.1450883768.

The spelling of 208680955 in words is "two hundred eight million, six hundred eighty thousand, nine hundred fifty-five".