205616164 has 24 divisors (see below), whose sum is σ = 395756928. Its totient is φ = 92879520.

The previous prime is 205616143. The next prime is 205616219. The reversal of 205616164 is 461616502.

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, 39622 + ... + 44509.

It is an arithmetic number, because the mean of its divisors is an integer number (16489872).

Almost surely, 2^205616164 is an apocalyptic number.

It is an amenable number.

205616164 is a deficient number, since it is larger than the sum of its proper divisors (190140764).

205616164 is a wasteful number, since it uses less digits than its factorization.

205616164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84195 (or 84193 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 205616164 is about 14339.3222991883. The cubic root of 205616164 is about 590.2270159620.

The spelling of 205616164 in words is "two hundred five million, six hundred sixteen thousand, one hundred sixty-four".