206472617 has 32 divisors (see below), whose sum is σ = 240651264. Its totient is φ = 175737600.

The previous prime is 206472611. The next prime is 206472661. The reversal of 206472617 is 716274602.

It is a cyclic number.

It is not a de Polignac number, because 206472617 - 2²⁰ = 205424041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206472611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 909458 + ... + 909684.

It is an arithmetic number, because the mean of its divisors is an integer number (7520352).

Almost surely, 2^206472617 is an apocalyptic number.

It is an amenable number.

206472617 is a deficient number, since it is larger than the sum of its proper divisors (34178647).

206472617 is a wasteful number, since it uses less digits than its factorization.

206472617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 206472617 is about 14369.1550551868. The cubic root of 206472617 is about 591.0453716349.

The spelling of 206472617 in words is "two hundred six million, four hundred seventy-two thousand, six hundred seventeen".