672447 has 4 divisors (see below), whose sum is σ = 896600. Its totient is φ = 448296.

The previous prime is 672443. The next prime is 672473. The reversal of 672447 is 744276.

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

It is not a de Polignac number, because 672447 - 2² = 672443 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672443) 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, 112072 + ... + 112077.

It is an arithmetic number, because the mean of its divisors is an integer number (224150).

2⁶⁷²⁴⁴⁷ is an apocalyptic number.

672447 is a deficient number, since it is larger than the sum of its proper divisors (224153).

672447 is a wasteful number, since it uses less digits than its factorization.

672447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224152.

The product of its digits is 9408, while the sum is 30.

The square root of 672447 is about 820.0286580358. The cubic root of 672447 is about 87.6097995751.

The spelling of 672447 in words is "six hundred seventy-two thousand, four hundred forty-seven".