206171070 has 64 divisors (see below), whose sum is σ = 598772736. Its totient is φ = 44352000.

The previous prime is 206171059. The next prime is 206171089. The reversal of 206171070 is 70171602.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 206171070.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25306 + ... + 32445.

It is an arithmetic number, because the mean of its divisors is an integer number (9355824).

Almost surely, 2^206171070 is an apocalyptic number.

206171070 is an abundant number, since it is smaller than the sum of its proper divisors (392601666).

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

206171070 is a wasteful number, since it uses less digits than its factorization.

206171070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57785.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 206171070 is about 14358.6583635102. The cubic root of 206171070 is about 590.7574968273.

The spelling of 206171070 in words is "two hundred six million, one hundred seventy-one thousand, seventy".