206126660 has 12 divisors (see below), whose sum is σ = 432866028. Its totient is φ = 82450656.

The previous prime is 206126659. The next prime is 206126663. The reversal of 206126660 is 66621602.

It can be written as a sum of positive squares in 2 ways, for example, as 115648516 + 90478144 = 10754^2 + 9512^2 .

It is not an unprimeable number, because it can be changed into a prime (206126663) 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, 5153147 + ... + 5153186.

It is an arithmetic number, because the mean of its divisors is an integer number (36072169).

Almost surely, 2^206126660 is an apocalyptic number.

206126660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206126660 is an abundant number, since it is smaller than the sum of its proper divisors (226739368).

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

206126660 is a wasteful number, since it uses less digits than its factorization.

206126660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10306342 (or 10306340 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 206126660 is about 14357.1118265478. Note that the first 3 decimals coincide. The cubic root of 206126660 is about 590.7150766753.

It can be divided in two parts, 20612 and 6660, that added together give a palindrome (27272).

The spelling of 206126660 in words is "two hundred six million, one hundred twenty-six thousand, six hundred sixty".