206540368 has 20 divisors (see below), whose sum is σ = 417571488. Its totient is φ = 98780000.

The previous prime is 206540353. The next prime is 206540371. The reversal of 206540368 is 863045602.

It is a happy number.

It is a super-2 number, since 2×206540368² = 85317847227150848, which contains 22 as substring.

It is a congruent number.

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, 280258 + ... + 280993.

Almost surely, 2^206540368 is an apocalyptic number.

It is an amenable number.

206540368 is an abundant number, since it is smaller than the sum of its proper divisors (211031120).

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

206540368 is a wasteful number, since it uses less digits than its factorization.

206540368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561282 (or 561276 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 206540368 is about 14371.5123769212. The cubic root of 206540368 is about 591.1100122257.

The spelling of 206540368 in words is "two hundred six million, five hundred forty thousand, three hundred sixty-eight".