206040345 has 24 divisors (see below), whose sum is σ = 383488704. Its totient is φ = 94189536.

The previous prime is 206040283. The next prime is 206040349. The reversal of 206040345 is 543040602.

It is not a de Polignac number, because 206040345 - 2⁷ = 206040217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206040349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139429 + ... + 140898.

It is an arithmetic number, because the mean of its divisors is an integer number (15978696).

Almost surely, 2^206040345 is an apocalyptic number.

It is an amenable number.

206040345 is a deficient number, since it is larger than the sum of its proper divisors (177448359).

206040345 is a wasteful number, since it uses less digits than its factorization.

206040345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280349 (or 280342 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 206040345 is about 14354.1055102713. The cubic root of 206040345 is about 590.6326116989.

Adding to 206040345 its reverse (543040602), we get a palindrome (749080947).

The spelling of 206040345 in words is "two hundred six million, forty thousand, three hundred forty-five".