206770871 has 4 divisors (see below), whose sum is σ = 207034392. Its totient is φ = 206507352.

The previous prime is 206770867. The next prime is 206770877. The reversal of 206770871 is 178077602.

206770871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178077602 = 2 ⋅89038801.

It is a cyclic number.

It is not a de Polignac number, because 206770871 - 2² = 206770867 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206770877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130580 + ... + 132153.

It is an arithmetic number, because the mean of its divisors is an integer number (51758598).

Almost surely, 2^206770871 is an apocalyptic number.

206770871 is a deficient number, since it is larger than the sum of its proper divisors (263521).

206770871 is an equidigital number, since it uses as much as digits as its factorization.

206770871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263520.

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 206770871 is about 14379.5295820135. The cubic root of 206770871 is about 591.3298271655.

The spelling of 206770871 in words is "two hundred six million, seven hundred seventy thousand, eight hundred seventy-one".