206665134 has 16 divisors (see below), whose sum is σ = 445125072. Its totient is φ = 63589248.

The previous prime is 206665087. The next prime is 206665159. The reversal of 206665134 is 431566602.

206665134 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×206665134² = 85420955222475912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 206665095 and 206665104.

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, 1324699 + ... + 1324854.

It is an arithmetic number, because the mean of its divisors is an integer number (27820317).

Almost surely, 2^206665134 is an apocalyptic number.

206665134 is an abundant number, since it is smaller than the sum of its proper divisors (238459938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206665134 is a wasteful number, since it uses less digits than its factorization.

206665134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2649571.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 206665134 is about 14375.8524616803. The cubic root of 206665134 is about 591.2290133152.

The spelling of 206665134 in words is "two hundred six million, six hundred sixty-five thousand, one hundred thirty-four".