206320580 has 36 divisors (see below), whose sum is σ = 452953452. Its totient is φ = 78936000.

The previous prime is 206320577. The next prime is 206320589. The reversal of 206320580 is 85023602.

It can be written as a sum of positive squares in 2 ways, for example, as 92428996 + 113891584 = 9614^2 + 10672^2 .

It is not an unprimeable number, because it can be changed into a prime (206320589) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 830 + ... + 20330.

Almost surely, 2^206320580 is an apocalyptic number.

206320580 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 206320580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226476726).

206320580 is an abundant number, since it is smaller than the sum of its proper divisors (246632872).

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

206320580 is a wasteful number, since it uses less digits than its factorization.

206320580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19556 (or 19531 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 206320580 is about 14363.8636863485. The cubic root of 206320580 is about 590.9002630777.

The spelling of 206320580 in words is "two hundred six million, three hundred twenty thousand, five hundred eighty".