206666713 has 8 divisors (see below), whose sum is σ = 225973440. Its totient is φ = 187446480.

The previous prime is 206666711. The next prime is 206666737. The reversal of 206666713 is 317666602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206666713 - 2¹ = 206666711 is a prime.

It is a super-2 number, since 2×206666713² = 85422260524448738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206666711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16570 + ... + 26227.

It is an arithmetic number, because the mean of its divisors is an integer number (28246680).

Almost surely, 2^206666713 is an apocalyptic number.

It is an amenable number.

206666713 is a deficient number, since it is larger than the sum of its proper divisors (19306727).

206666713 is a wasteful number, since it uses less digits than its factorization.

206666713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43247.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 206666713 is about 14375.9073800578. The cubic root of 206666713 is about 591.2305190494.

The spelling of 206666713 in words is "two hundred six million, six hundred sixty-six thousand, seven hundred thirteen".