206493860 has 12 divisors (see below), whose sum is σ = 433637148. Its totient is φ = 82597536.

The previous prime is 206493853. The next prime is 206493887. The reversal of 206493860 is 68394602.

It can be written as a sum of positive squares in 2 ways, for example, as 45508516 + 160985344 = 6746^2 + 12688^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5162327 + ... + 5162366.

It is an arithmetic number, because the mean of its divisors is an integer number (36136429).

Almost surely, 2^206493860 is an apocalyptic number.

206493860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206493860 is an abundant number, since it is smaller than the sum of its proper divisors (227143288).

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

206493860 is a wasteful number, since it uses less digits than its factorization.

206493860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10324702 (or 10324700 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 206493860 is about 14369.8942236886. The cubic root of 206493860 is about 591.0656409026.

The spelling of 206493860 in words is "two hundred six million, four hundred ninety-three thousand, eight hundred sixty".