205084664 has 8 divisors (see below), whose sum is σ = 384533760. Its totient is φ = 102542328.

The previous prime is 205084657. The next prime is 205084679. The reversal of 205084664 is 466480502.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12817784 + ... + 12817799.

It is an arithmetic number, because the mean of its divisors is an integer number (48066720).

Almost surely, 2^205084664 is an apocalyptic number.

It is an amenable number.

205084664 is a deficient number, since it is larger than the sum of its proper divisors (179449096).

205084664 is a wasteful number, since it uses less digits than its factorization.

205084664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25635589 (or 25635585 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 205084664 is about 14320.7773532026. Note that the first 3 decimals coincide. The cubic root of 205084664 is about 589.7180152065.

The spelling of 205084664 in words is "two hundred five million, eighty-four thousand, six hundred sixty-four".