206748117 has 12 divisors (see below), whose sum is σ = 305920524. Its totient is φ = 134470080.

The previous prime is 206748097. The next prime is 206748121. The reversal of 206748117 is 711847602.

It can be written as a sum of positive squares in 2 ways, for example, as 14814801 + 191933316 = 3849^2 + 13854^2 .

It is not a de Polignac number, because 206748117 - 2⁶ = 206748053 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206748137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 279778 + ... + 280515.

It is an arithmetic number, because the mean of its divisors is an integer number (25493377).

Almost surely, 2^206748117 is an apocalyptic number.

It is an amenable number.

206748117 is a deficient number, since it is larger than the sum of its proper divisors (99172407).

206748117 is a wasteful number, since it uses less digits than its factorization.

206748117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560340 (or 560337 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 206748117 is about 14378.7383660737. The cubic root of 206748117 is about 591.3081355020.

The spelling of 206748117 in words is "two hundred six million, seven hundred forty-eight thousand, one hundred seventeen".