206505006 has 16 divisors (see below), whose sum is σ = 422615424. Its totient is φ = 67234104.

The previous prime is 206504983. The next prime is 206505007. The reversal of 206505006 is 600505602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206505007) 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, 399946 + ... + 400461.

It is an arithmetic number, because the mean of its divisors is an integer number (26413464).

Almost surely, 2^206505006 is an apocalyptic number.

206505006 is an abundant number, since it is smaller than the sum of its proper divisors (216110418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206505006 is a wasteful number, since it uses less digits than its factorization.

206505006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800455.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 206505006 is about 14370.2820431612. The cubic root of 206505006 is about 591.0762754385.

The spelling of 206505006 in words is "two hundred six million, five hundred five thousand, six".