205977106 has 8 divisors (see below), whose sum is σ = 313317504. Its totient is φ = 101537940.

The previous prime is 205977097. The next prime is 205977173. The reversal of 205977106 is 601779502.

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

It is a super-2 number, since 2×205977106² = 84853136392270472, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 725130 + ... + 725413.

It is an arithmetic number, because the mean of its divisors is an integer number (39164688).

Almost surely, 2^205977106 is an apocalyptic number.

205977106 is a deficient number, since it is larger than the sum of its proper divisors (107340398).

205977106 is a wasteful number, since it uses less digits than its factorization.

205977106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450616.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 205977106 is about 14351.9025219655. The cubic root of 205977106 is about 590.5721788134.

The spelling of 205977106 in words is "two hundred five million, nine hundred seventy-seven thousand, one hundred six".