206016639 has 16 divisors (see below), whose sum is σ = 290234880. Its totient is φ = 129625920.

The previous prime is 206016631. The next prime is 206016673. The reversal of 206016639 is 936610602.

It is a happy number.

It is not a de Polignac number, because 206016639 - 2³ = 206016631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206016631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8779 + ... + 22115.

It is an arithmetic number, because the mean of its divisors is an integer number (18139680).

Almost surely, 2^206016639 is an apocalyptic number.

206016639 is a deficient number, since it is larger than the sum of its proper divisors (84218241).

206016639 is a wasteful number, since it uses less digits than its factorization.

206016639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13630.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 206016639 is about 14353.2797297342. The cubic root of 206016639 is about 590.6099590582.

The spelling of 206016639 in words is "two hundred six million, sixteen thousand, six hundred thirty-nine".