206312646 has 32 divisors (see below), whose sum is σ = 438823008. Its totient is φ = 64440320.

The previous prime is 206312627. The next prime is 206312651. The reversal of 206312646 is 646213602.

206312646 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19426 + ... + 28106.

It is an arithmetic number, because the mean of its divisors is an integer number (13713219).

Almost surely, 2^206312646 is an apocalyptic number.

206312646 is an abundant number, since it is smaller than the sum of its proper divisors (232510362).

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

206312646 is a wasteful number, since it uses less digits than its factorization.

206312646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8936.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 206312646 is about 14363.5875045199. The cubic root of 206312646 is about 590.8926886794.

The spelling of 206312646 in words is "two hundred six million, three hundred twelve thousand, six hundred forty-six".