673365145 has 4 divisors (see below), whose sum is σ = 808038180. Its totient is φ = 538692112.

The previous prime is 673365127. The next prime is 673365151. The reversal of 673365145 is 541563376.

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 233875849 + 439489296 = 15293^2 + 20964^2 .

It is a cyclic number.

It is not a de Polignac number, because 673365145 - 2⁹ = 673364633 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 673365098 and 673365107.

It is an unprimeable number.

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, 67336510 + ... + 67336519.

It is an arithmetic number, because the mean of its divisors is an integer number (202009545).

Almost surely, 2^673365145 is an apocalyptic number.

It is an amenable number.

673365145 is a deficient number, since it is larger than the sum of its proper divisors (134673035).

673365145 is a wasteful number, since it uses less digits than its factorization.

673365145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134673034.

The product of its digits is 226800, while the sum is 40.

The square root of 673365145 is about 25949.2802404999. The cubic root of 673365145 is about 876.4965496765.

The spelling of 673365145 in words is "six hundred seventy-three million, three hundred sixty-five thousand, one hundred forty-five".