672834445 has 4 divisors (see below), whose sum is σ = 807401340. Its totient is φ = 538267552.

The previous prime is 672834413. The next prime is 672834457. The reversal of 672834445 is 544438276.

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 534395689 + 138438756 = 23117^2 + 11766^2 .

It is a cyclic number.

It is not a de Polignac number, because 672834445 - 2⁵ = 672834413 is a prime.

It is a congruent number.

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, 67283440 + ... + 67283449.

It is an arithmetic number, because the mean of its divisors is an integer number (201850335).

Almost surely, 2^672834445 is an apocalyptic number.

It is an amenable number.

672834445 is a deficient number, since it is larger than the sum of its proper divisors (134566895).

672834445 is a wasteful number, since it uses less digits than its factorization.

672834445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134566894.

The product of its digits is 645120, while the sum is 43.

The square root of 672834445 is about 25939.0525077536. The cubic root of 672834445 is about 876.2662244325.

The spelling of 672834445 in words is "six hundred seventy-two million, eight hundred thirty-four thousand, four hundred forty-five".