672591 has 4 divisors (see below), whose sum is σ = 896792. Its totient is φ = 448392.

The previous prime is 672587. The next prime is 672593. The reversal of 672591 is 195276.

672591 is nontrivially palindromic in base 5.

672591 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 is not a de Polignac number, because 672591 - 2² = 672587 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 672591.

It is not an unprimeable number, because it can be changed into a prime (672593) 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, 112096 + ... + 112101.

It is an arithmetic number, because the mean of its divisors is an integer number (224198).

2⁶⁷²⁵⁹¹ is an apocalyptic number.

672591 is a deficient number, since it is larger than the sum of its proper divisors (224201).

672591 is a wasteful number, since it uses less digits than its factorization.

672591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224200.

The product of its digits is 3780, while the sum is 30.

The square root of 672591 is about 820.1164551452. The cubic root of 672591 is about 87.6160528118.

The spelling of 672591 in words is "six hundred seventy-two thousand, five hundred ninety-one".