672844291 has 4 divisors (see below), whose sum is σ = 768964912. Its totient is φ = 576723672.

The previous prime is 672844261. The next prime is 672844301. The reversal of 672844291 is 192448276.

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

It is not a de Polignac number, because 672844291 - 2⁵ = 672844259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672844261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48060300 + ... + 48060313.

It is an arithmetic number, because the mean of its divisors is an integer number (192241228).

Almost surely, 2^672844291 is an apocalyptic number.

672844291 is a deficient number, since it is larger than the sum of its proper divisors (96120621).

672844291 is an equidigital number, since it uses as much as digits as its factorization.

672844291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96120620.

The product of its digits is 193536, while the sum is 43.

The square root of 672844291 is about 25939.2422981089. The cubic root of 672844291 is about 876.2704987258.

The spelling of 672844291 in words is "six hundred seventy-two million, eight hundred forty-four thousand, two hundred ninety-one".