206911964 has 24 divisors (see below), whose sum is σ = 438167520. Its totient is φ = 83460096.

The previous prime is 206911951. The next prime is 206911967. The reversal of 206911964 is 469119602.

206911964 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 not an unprimeable number, because it can be changed into a prime (206911967) 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, 216869 + ... + 217820.

It is an arithmetic number, because the mean of its divisors is an integer number (18256980).

Almost surely, 2^206911964 is an apocalyptic number.

It is an amenable number.

206911964 is an abundant number, since it is smaller than the sum of its proper divisors (231255556).

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

206911964 is a wasteful number, since it uses less digits than its factorization.

206911964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434717 (or 434715 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 206911964 is about 14384.4347820830. The cubic root of 206911964 is about 591.4642973144.

The spelling of 206911964 in words is "two hundred six million, nine hundred eleven thousand, nine hundred sixty-four".