206671634 has 16 divisors (see below), whose sum is σ = 334539072. Its totient is φ = 95191248.

The previous prime is 206671609. The next prime is 206671651. The reversal of 206671634 is 436176602.

206671634 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 206671594 and 206671603.

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, 5177 + ... + 20979.

It is an arithmetic number, because the mean of its divisors is an integer number (20908692).

Almost surely, 2^206671634 is an apocalyptic number.

206671634 is a deficient number, since it is larger than the sum of its proper divisors (127867438).

206671634 is a wasteful number, since it uses less digits than its factorization.

206671634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16321.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 206671634 is about 14376.0785334527. The cubic root of 206671634 is about 591.2352116649.

The spelling of 206671634 in words is "two hundred six million, six hundred seventy-one thousand, six hundred thirty-four".