543642387 has 4 divisors (see below), whose sum is σ = 724856520. Its totient is φ = 362428256.

The previous prime is 543642361. The next prime is 543642389. The reversal of 543642387 is 783246345.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 543642387 - 2⁷ = 543642259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (543642389) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 90607062 + ... + 90607067.

It is an arithmetic number, because the mean of its divisors is an integer number (181214130).

Almost surely, 2^543642387 is an apocalyptic number.

543642387 is a deficient number, since it is larger than the sum of its proper divisors (181214133).

543642387 is a wasteful number, since it uses less digits than its factorization.

543642387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181214132.

The product of its digits is 483840, while the sum is 42.

The square root of 543642387 is about 23316.1400536195. The cubic root of 543642387 is about 816.1521021371.

The spelling of 543642387 in words is "five hundred forty-three million, six hundred forty-two thousand, three hundred eighty-seven".