206649846 has 64 divisors (see below), whose sum is σ = 496419840. Its totient is φ = 63344160.

The previous prime is 206649803. The next prime is 206649851. The reversal of 206649846 is 648946602.

206649846 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 31 ways as a sum of consecutive naturals, for example, 302221 + ... + 302903.

It is an arithmetic number, because the mean of its divisors is an integer number (7756560).

Almost surely, 2^206649846 is an apocalyptic number.

206649846 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 206649846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248209920).

206649846 is an abundant number, since it is smaller than the sum of its proper divisors (289769994).

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

206649846 is a wasteful number, since it uses less digits than its factorization.

206649846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 206649846 is about 14375.3207268568. The cubic root of 206649846 is about 591.2144342845.

The spelling of 206649846 in words is "two hundred six million, six hundred forty-nine thousand, eight hundred forty-six".