205080664 has 8 divisors (see below), whose sum is σ = 384526260. Its totient is φ = 102540328.

The previous prime is 205080641. The next prime is 205080671. The reversal of 205080664 is 466080502.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12817534 + ... + 12817549.

Almost surely, 2^205080664 is an apocalyptic number.

It is an amenable number.

205080664 is a deficient number, since it is larger than the sum of its proper divisors (179445596).

205080664 is a wasteful number, since it uses less digits than its factorization.

205080664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25635089 (or 25635085 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 205080664 is about 14320.6376952983. The cubic root of 205080664 is about 589.7141812006.

The spelling of 205080664 in words is "two hundred five million, eighty thousand, six hundred sixty-four".