206667601 has 16 divisors (see below), whose sum is σ = 249546240. Its totient is φ = 167388480.

The previous prime is 206667577. The next prime is 206667613. The reversal of 206667601 is 106766602.

It is not a de Polignac number, because 206667601 - 2¹¹ = 206665553 is a prime.

It is a super-2 number, since 2×206667601² = 85422994606190402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206667631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1290 + ... + 20371.

It is an arithmetic number, because the mean of its divisors is an integer number (15596640).

Almost surely, 2^206667601 is an apocalyptic number.

It is an amenable number.

206667601 is a deficient number, since it is larger than the sum of its proper divisors (42878639).

206667601 is a wasteful number, since it uses less digits than its factorization.

206667601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21744.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 206667601 is about 14375.9382650316. The cubic root of 206667601 is about 591.2313658426.

Subtracting from 206667601 its reverse (106766602), we obtain a palindrome (99900999).

The spelling of 206667601 in words is "two hundred six million, six hundred sixty-seven thousand, six hundred one".