206867947 has 8 divisors (see below), whose sum is σ = 243033840. Its totient is φ = 173595360.

The previous prime is 206867891. The next prime is 206867963. The reversal of 206867947 is 749768602.

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 206867947 - 2¹⁹ = 206343659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206867947.

It is not an unprimeable number, because it can be changed into a prime (206867047) 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, 723172 + ... + 723457.

It is an arithmetic number, because the mean of its divisors is an integer number (30379230).

Almost surely, 2^206867947 is an apocalyptic number.

206867947 is a deficient number, since it is larger than the sum of its proper divisors (36165893).

206867947 is a wasteful number, since it uses less digits than its factorization.

206867947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446653.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The square root of 206867947 is about 14382.9046788192. The cubic root of 206867947 is about 591.4223530178.

The spelling of 206867947 in words is "two hundred six million, eight hundred sixty-seven thousand, nine hundred forty-seven".