543845668 has 6 divisors (see below), whose sum is σ = 951729926. Its totient is φ = 271922832.

The previous prime is 543845641. The next prime is 543845669. The reversal of 543845668 is 866548345.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 370870564 + 172975104 = 19258^2 + 13152^2 .

It is a super-2 number, since 2×543845668² = 591536221204732448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (543845669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67980705 + ... + 67980712.

Almost surely, 2^543845668 is an apocalyptic number.

It is an amenable number.

543845668 is a deficient number, since it is larger than the sum of its proper divisors (407884258).

543845668 is a wasteful number, since it uses less digits than its factorization.

543845668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135961421 (or 135961419 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 49.

The square root of 543845668 is about 23320.4988797410. The cubic root of 543845668 is about 816.2538157787.

The spelling of 543845668 in words is "five hundred forty-three million, eight hundred forty-five thousand, six hundred sixty-eight".