206516406 has 16 divisors (see below), whose sum is σ = 413638848. Its totient is φ = 68737800.

The previous prime is 206516393. The next prime is 206516407. The reversal of 206516406 is 604615602.

206516406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206516407) 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, 20760 + ... + 29051.

It is an arithmetic number, because the mean of its divisors is an integer number (25852428).

Almost surely, 2^206516406 is an apocalyptic number.

206516406 is an abundant number, since it is smaller than the sum of its proper divisors (207122442).

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

206516406 is a wasteful number, since it uses less digits than its factorization.

206516406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50507.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 206516406 is about 14370.6786896096. The cubic root of 206516406 is about 591.0871519231.

The spelling of 206516406 in words is "two hundred six million, five hundred sixteen thousand, four hundred six".