543666345 has 32 divisors (see below), whose sum is σ = 895562112. Its totient is φ = 281428992.

The previous prime is 543666337. The next prime is 543666359.

It is a happy number.

543666345 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 543666345 - 2³ = 543666337 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 543666297 and 543666306.

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 31 ways as a sum of consecutive naturals, for example, 289329 + ... + 291201.

It is an arithmetic number, because the mean of its divisors is an integer number (27986316).

Almost surely, 2^543666345 is an apocalyptic number.

It is an amenable number.

543666345 is a deficient number, since it is larger than the sum of its proper divisors (351895767).

543666345 is a wasteful number, since it uses less digits than its factorization.

543666345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441.

The product of its digits is 777600, while the sum is 42.

The square root of 543666345 is about 23316.6538122433. The cubic root of 543666345 is about 816.1640910753.

The spelling of 543666345 in words is "five hundred forty-three million, six hundred sixty-six thousand, three hundred forty-five".