206536340 has 12 divisors (see below), whose sum is σ = 433726356. Its totient is φ = 82614528.

The previous prime is 206536333. The next prime is 206536367. The reversal of 206536340 is 43635602.

It can be written as a sum of positive squares in 2 ways, for example, as 49084036 + 157452304 = 7006^2 + 12548^2 .

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, 5163389 + ... + 5163428.

It is an arithmetic number, because the mean of its divisors is an integer number (36143863).

Almost surely, 2^206536340 is an apocalyptic number.

206536340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206536340 is an abundant number, since it is smaller than the sum of its proper divisors (227190016).

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

206536340 is a wasteful number, since it uses less digits than its factorization.

206536340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10326826 (or 10326824 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 206536340 is about 14371.3722378902. The cubic root of 206536340 is about 591.1061695441.

The spelling of 206536340 in words is "two hundred six million, five hundred thirty-six thousand, three hundred forty".