206042646 has 16 divisors (see below), whose sum is σ = 417731184. Its totient is φ = 67739904.

The previous prime is 206042623. The next prime is 206042663. The reversal of 206042646 is 646240602.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234771 + ... + 235646.

It is an arithmetic number, because the mean of its divisors is an integer number (26108199).

Almost surely, 2^206042646 is an apocalyptic number.

206042646 is an abundant number, since it is smaller than the sum of its proper divisors (211688538).

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

206042646 is a wasteful number, since it uses less digits than its factorization.

206042646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470495.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 206042646 is about 14354.1856613324. The cubic root of 206042646 is about 590.6348103631.

The spelling of 206042646 in words is "two hundred six million, forty-two thousand, six hundred forty-six".