206899704 has 192 divisors, whose sum is σ = 659635200. Its totient is φ = 59529600.

The previous prime is 206899699. The next prime is 206899711. The reversal of 206899704 is 407998602.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 206899704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3903742 + ... + 3903794.

It is an arithmetic number, because the mean of its divisors is an integer number (3435600).

Almost surely, 2^206899704 is an apocalyptic number.

206899704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206899704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329817600).

206899704 is an abundant number, since it is smaller than the sum of its proper divisors (452735496).

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

206899704 is a wasteful number, since it uses less digits than its factorization.

206899704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 206899704 is about 14384.0086206871. The cubic root of 206899704 is about 591.4526152196.

The spelling of 206899704 in words is "two hundred six million, eight hundred ninety-nine thousand, seven hundred four".