205970179 has 4 divisors (see below), whose sum is σ = 207037576. Its totient is φ = 204902784.

The previous prime is 205970173. The next prime is 205970189. The reversal of 205970179 is 971079502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205970179 - 2⁹ = 205969667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205970173) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 533409 + ... + 533794.

It is an arithmetic number, because the mean of its divisors is an integer number (51759394).

Almost surely, 2^205970179 is an apocalyptic number.

205970179 is a deficient number, since it is larger than the sum of its proper divisors (1067397).

205970179 is a wasteful number, since it uses less digits than its factorization.

205970179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067396.

The product of its (nonzero) digits is 39690, while the sum is 40.

The square root of 205970179 is about 14351.6611930466. The cubic root of 205970179 is about 590.5655584347.

The spelling of 205970179 in words is "two hundred five million, nine hundred seventy thousand, one hundred seventy-nine".