205900675 has 6 divisors (see below), whose sum is σ = 255316868. Its totient is φ = 164720520.

The previous prime is 205900649. The next prime is 205900687. The reversal of 205900675 is 576009502.

It is a de Polignac number, because none of the positive numbers 2^k-205900675 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205900675.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4117989 + ... + 4118038.

Almost surely, 2^205900675 is an apocalyptic number.

205900675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

205900675 is a deficient number, since it is larger than the sum of its proper divisors (49416193).

205900675 is an equidigital number, since it uses as much as digits as its factorization.

205900675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8236037 (or 8236032 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 205900675 is about 14349.2395268878. The cubic root of 205900675 is about 590.4991227875.

The spelling of 205900675 in words is "two hundred five million, nine hundred thousand, six hundred seventy-five".