673565543 has 4 divisors (see below), whose sum is σ = 769789200. Its totient is φ = 577341888.

The previous prime is 673565533. The next prime is 673565587. The reversal of 673565543 is 345565376.

It is a happy number.

673565543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673565543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 673565494 and 673565503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673565533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48111818 + ... + 48111831.

It is an arithmetic number, because the mean of its divisors is an integer number (192447300).

Almost surely, 2^673565543 is an apocalyptic number.

673565543 is a deficient number, since it is larger than the sum of its proper divisors (96223657).

673565543 is an equidigital number, since it uses as much as digits as its factorization.

673565543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96223656.

The product of its digits is 1134000, while the sum is 44.

The square root of 673565543 is about 25953.1412934928. The cubic root of 673565543 is about 876.5834914768.

The spelling of 673565543 in words is "six hundred seventy-three million, five hundred sixty-five thousand, five hundred forty-three".