543009645 has 96 divisors (see below), whose sum is σ = 1055358720. Its totient is φ = 256988160.

The previous prime is 543009637. The next prime is 543009647. The reversal of 543009645 is 546900345.

It is a happy number.

543009645 is a `hidden beast` number, since 5 + 4 + 3 + 0 + 0 + 9 + 645 = 666.

It is not a de Polignac number, because 543009645 - 2³ = 543009637 is a prime.

It is a super-3 number, since 3×543009645³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543009647) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1041985 + ... + 1042505.

It is an arithmetic number, because the mean of its divisors is an integer number (10993320).

Almost surely, 2^543009645 is an apocalyptic number.

It is an amenable number.

543009645 is a deficient number, since it is larger than the sum of its proper divisors (512349075).

543009645 is a wasteful number, since it uses less digits than its factorization.

543009645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 543009645 is about 23302.5673478267. The cubic root of 543009645 is about 815.8353410912.

The spelling of 543009645 in words is "five hundred forty-three million, nine thousand, six hundred forty-five".