206790171 has 16 divisors (see below), whose sum is σ = 328809984. Its totient is φ = 113027904.

The previous prime is 206790169. The next prime is 206790179. The reversal of 206790171 is 171097602.

It is not a de Polignac number, because 206790171 - 2¹ = 206790169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206790179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213586 + ... + 214551.

It is an arithmetic number, because the mean of its divisors is an integer number (20550624).

Almost surely, 2^206790171 is an apocalyptic number.

206790171 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

206790171 is a deficient number, since it is larger than the sum of its proper divisors (122019813).

206790171 is a wasteful number, since it uses less digits than its factorization.

206790171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428170.

The product of its (nonzero) digits is 5292, while the sum is 33.

The square root of 206790171 is about 14380.2006592398. The cubic root of 206790171 is about 591.3482248417.

The spelling of 206790171 in words is "two hundred six million, seven hundred ninety thousand, one hundred seventy-one".