205130685 has 8 divisors (see below), whose sum is σ = 328209120. Its totient is φ = 109403024.

The previous prime is 205130647. The next prime is 205130693. The reversal of 205130685 is 586031502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205130685 - 2²⁵ = 171576253 is a prime.

It is a congruent number.

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, 6837675 + ... + 6837704.

It is an arithmetic number, because the mean of its divisors is an integer number (41026140).

Almost surely, 2^205130685 is an apocalyptic number.

It is an amenable number.

205130685 is a deficient number, since it is larger than the sum of its proper divisors (123078435).

205130685 is a wasteful number, since it uses less digits than its factorization.

205130685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13675387.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 205130685 is about 14322.3840543396. The cubic root of 205130685 is about 589.7621228163.

The spelling of 205130685 in words is "two hundred five million, one hundred thirty thousand, six hundred eighty-five".