206745271 has 4 divisors (see below), whose sum is σ = 209577472. Its totient is φ = 203913072.

The previous prime is 206745241. The next prime is 206745323. The reversal of 206745271 is 172547602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172547602 = 2 ⋅86273801.

It is a cyclic number.

It is not a de Polignac number, because 206745271 - 2⁵ = 206745239 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 (206745241) 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, 1415991 + ... + 1416136.

It is an arithmetic number, because the mean of its divisors is an integer number (52394368).

Almost surely, 2^206745271 is an apocalyptic number.

206745271 is a deficient number, since it is larger than the sum of its proper divisors (2832201).

206745271 is an equidigital number, since it uses as much as digits as its factorization.

206745271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832200.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 206745271 is about 14378.6394001658. The cubic root of 206745271 is about 591.3054222638.

The spelling of 206745271 in words is "two hundred six million, seven hundred forty-five thousand, two hundred seventy-one".