205680268 has 24 divisors (see below), whose sum is σ = 363164480. Its totient is φ = 101923920.

The previous prime is 205680253. The next prime is 205680281. The reversal of 205680268 is 862086502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319555 + ... + 320197.

Almost surely, 2^205680268 is an apocalyptic number.

It is an amenable number.

205680268 is a deficient number, since it is larger than the sum of its proper divisors (157484212).

205680268 is a wasteful number, since it uses less digits than its factorization.

205680268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 205680268 is about 14341.5573770773. The cubic root of 205680268 is about 590.2883470374.

The spelling of 205680268 in words is "two hundred five million, six hundred eighty thousand, two hundred sixty-eight".