206621260 has 12 divisors (see below), whose sum is σ = 433904688. Its totient is φ = 82648496.

The previous prime is 206621249. The next prime is 206621273. The reversal of 206621260 is 62126602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5165512 + ... + 5165551.

It is an arithmetic number, because the mean of its divisors is an integer number (36158724).

Almost surely, 2^206621260 is an apocalyptic number.

206621260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206621260 is an abundant number, since it is smaller than the sum of its proper divisors (227283428).

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

206621260 is a wasteful number, since it uses less digits than its factorization.

206621260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10331072 (or 10331070 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 206621260 is about 14374.3264190013. The cubic root of 206621260 is about 591.1871720089.

Adding to 206621260 its reverse (62126602), we get a palindrome (268747862).

The spelling of 206621260 in words is "two hundred six million, six hundred twenty-one thousand, two hundred sixty".