673543441 has 4 divisors (see below), whose sum is σ = 673606692. Its totient is φ = 673480192.

The previous prime is 673543379. The next prime is 673543463. The reversal of 673543441 is 144345376.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 204604416 + 468939025 = 14304^2 + 21655^2 .

It is a cyclic number.

It is not a de Polignac number, because 673543441 - 2²⁷ = 539325713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 673543441.

It is not an unprimeable number, because it can be changed into a prime (673549441) 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, 11296 + ... + 38401.

It is an arithmetic number, because the mean of its divisors is an integer number (168401673).

Almost surely, 2^673543441 is an apocalyptic number.

It is an amenable number.

673543441 is a deficient number, since it is larger than the sum of its proper divisors (63251).

673543441 is a wasteful number, since it uses less digits than its factorization.

673543441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63250.

The product of its digits is 120960, while the sum is 37.

The square root of 673543441 is about 25952.7154841261. The cubic root of 673543441 is about 876.5739034664.

It can be divided in two parts, 6735 and 43441, that added together give a square (50176 = 224²).

The spelling of 673543441 in words is "six hundred seventy-three million, five hundred forty-three thousand, four hundred forty-one".