206313620 has 12 divisors (see below), whose sum is σ = 433258644. Its totient is φ = 82525440.

The previous prime is 206313617. The next prime is 206313641. The reversal of 206313620 is 26313602.

It can be written as a sum of positive squares in 2 ways, for example, as 131698576 + 74615044 = 11476^2 + 8638^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5157821 + ... + 5157860.

It is an arithmetic number, because the mean of its divisors is an integer number (36104887).

Almost surely, 2^206313620 is an apocalyptic number.

206313620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206313620 is an abundant number, since it is smaller than the sum of its proper divisors (226945024).

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

206313620 is a wasteful number, since it uses less digits than its factorization.

206313620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10315690 (or 10315688 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 206313620 is about 14363.6214096585. The cubic root of 206313620 is about 590.8936185441.

The spelling of 206313620 in words is "two hundred six million, three hundred thirteen thousand, six hundred twenty".