206343620 has 96 divisors (see below), whose sum is σ = 528353280. Its totient is φ = 66078720.

The previous prime is 206343619. The next prime is 206343623. The reversal of 206343620 is 26343602.

It is a zygodrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 206343620.

It is not an unprimeable number, because it can be changed into a prime (206343623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 430541 + ... + 431019.

It is an arithmetic number, because the mean of its divisors is an integer number (5503680).

Almost surely, 2^206343620 is an apocalyptic number.

206343620 is a gapful number since it is divisible by the number (20) 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 206343620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264176640).

206343620 is an abundant number, since it is smaller than the sum of its proper divisors (322009660).

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

206343620 is a wasteful number, since it uses less digits than its factorization.

206343620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 206343620 is about 14364.6656765829. The cubic root of 206343620 is about 590.9222577091.

The spelling of 206343620 in words is "two hundred six million, three hundred forty-three thousand, six hundred twenty".