673344445 has 4 divisors (see below), whose sum is σ = 808013340. Its totient is φ = 538675552.

The previous prime is 673344443. The next prime is 673344457. The reversal of 673344445 is 544443376.

It is a happy number.

673344445 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 can be written as a sum of positive squares in 2 ways, for example, as 92968164 + 580376281 = 9642^2 + 24091^2 .

It is a cyclic number.

It is not a de Polignac number, because 673344445 - 2¹ = 673344443 is a prime.

It is a super-2 number, since 2×673344445² = 906785483224716050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 673344398 and 673344407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673344443) 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, 67334440 + ... + 67334449.

It is an arithmetic number, because the mean of its divisors is an integer number (202003335).

Almost surely, 2^673344445 is an apocalyptic number.

It is an amenable number.

673344445 is a deficient number, since it is larger than the sum of its proper divisors (134668895).

673344445 is a wasteful number, since it uses less digits than its factorization.

673344445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134668894.

The product of its digits is 483840, while the sum is 40.

The square root of 673344445 is about 25948.8813824411. The cubic root of 673344445 is about 876.4875680887.

The spelling of 673344445 in words is "six hundred seventy-three million, three hundred forty-four thousand, four hundred forty-five".