206398064 has 20 divisors (see below), whose sum is σ = 420944040. Its totient is φ = 97767360.

The previous prime is 206398001. The next prime is 206398069. The reversal of 206398064 is 460893602.

206398064 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206398069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339167 + ... + 339774.

It is an arithmetic number, because the mean of its divisors is an integer number (21047202).

Almost surely, 2^206398064 is an apocalyptic number.

It is an amenable number.

206398064 is an abundant number, since it is smaller than the sum of its proper divisors (214545976).

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

206398064 is a wasteful number, since it uses less digits than its factorization.

206398064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678968 (or 678962 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 206398064 is about 14366.5606183248. The cubic root of 206398064 is about 590.9742249766.

The spelling of 206398064 in words is "two hundred six million, three hundred ninety-eight thousand, sixty-four".