206900345 has 8 divisors (see below), whose sum is σ = 253563264. Its totient is φ = 161998384.

The previous prime is 206900339. The next prime is 206900359. The reversal of 206900345 is 543009602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206900345 - 2²⁶ = 139791481 is a prime.

It is a super-2 number, since 2×206900345² = 85615505522238050, which contains 22 as substring.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 439979 + ... + 440448.

It is an arithmetic number, because the mean of its divisors is an integer number (31695408).

Almost surely, 2^206900345 is an apocalyptic number.

It is an amenable number.

206900345 is a deficient number, since it is larger than the sum of its proper divisors (46662919).

206900345 is an equidigital number, since it uses as much as digits as its factorization.

206900345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880479.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 206900345 is about 14384.0309023584. The cubic root of 206900345 is about 591.4532260159.

Adding to 206900345 its reverse (543009602), we get a palindrome (749909947).

The spelling of 206900345 in words is "two hundred six million, nine hundred thousand, three hundred forty-five".