206978006 has 8 divisors (see below), whose sum is σ = 317687304. Its totient is φ = 101082240.

The previous prime is 206978003. The next prime is 206978011. The reversal of 206978006 is 600879602.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206978003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1203275 + ... + 1203446.

It is an arithmetic number, because the mean of its divisors is an integer number (39710913).

Almost surely, 2^206978006 is an apocalyptic number.

206978006 is a deficient number, since it is larger than the sum of its proper divisors (110709298).

206978006 is a wasteful number, since it uses less digits than its factorization.

206978006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2406766.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 206978006 is about 14386.7302052968. The cubic root of 206978006 is about 591.5272183255.

The spelling of 206978006 in words is "two hundred six million, nine hundred seventy-eight thousand, six".