205486668 has 18 divisors (see below), whose sum is σ = 519424724. Its totient is φ = 68495544.

The previous prime is 205486657. The next prime is 205486739. The reversal of 205486668 is 866684502.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2853946 + ... + 2854017.

Almost surely, 2^205486668 is an apocalyptic number.

It is an amenable number.

205486668 is an abundant number, since it is smaller than the sum of its proper divisors (313938056).

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

205486668 is a wasteful number, since it uses less digits than its factorization.

205486668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5707973 (or 5707968 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 205486668 is about 14334.8061723903. The cubic root of 205486668 is about 590.1030826303.

The spelling of 205486668 in words is "two hundred five million, four hundred eighty-six thousand, six hundred sixty-eight".