206116540 has 36 divisors (see below), whose sum is σ = 503515656. Its totient is φ = 70668192.

The previous prime is 206116511. The next prime is 206116549. The reversal of 206116540 is 45611602.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206116549) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 104182 + ... + 106141.

It is an arithmetic number, because the mean of its divisors is an integer number (13986546).

Almost surely, 2^206116540 is an apocalyptic number.

206116540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206116540 is an abundant number, since it is smaller than the sum of its proper divisors (297399116).

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

206116540 is a wasteful number, since it uses less digits than its factorization.

206116540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210346 (or 210337 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 206116540 is about 14356.7593836492. The cubic root of 206116540 is about 590.7054092627.

The spelling of 206116540 in words is "two hundred six million, one hundred sixteen thousand, five hundred forty".