206117070 has 32 divisors (see below), whose sum is σ = 495319968. Its totient is φ = 54893568.

The previous prime is 206117069. The next prime is 206117081. The reversal of 206117070 is 70711602.

It is a self number, because there is not a number n which added to its sum of digits gives 206117070.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21702 + ... + 29718.

It is an arithmetic number, because the mean of its divisors is an integer number (15478749).

Almost surely, 2^206117070 is an apocalyptic number.

206117070 is an abundant number, since it is smaller than the sum of its proper divisors (289202898).

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

206117070 is a wasteful number, since it uses less digits than its factorization.

206117070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8884.

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

The square root of 206117070 is about 14356.7778418418. Note that the first 3 decimals coincide. The cubic root of 206117070 is about 590.7059155679.

Adding to 206117070 its reverse (70711602), we get a palindrome (276828672).

The spelling of 206117070 in words is "two hundred six million, one hundred seventeen thousand, seventy".