672539 has 8 divisors (see below), whose sum is σ = 795360. Its totient is φ = 556416.

The previous prime is 672521. The next prime is 672557. The reversal of 672539 is 935276.

It is an interprime number because it is at equal distance from previous prime (672521) and next prime (672557).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 672539 - 2⁸ = 672283 is a prime.

It is an Ulam 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 (672439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1454 + ... + 1859.

It is an arithmetic number, because the mean of its divisors is an integer number (99420).

2⁶⁷²⁵³⁹ is an apocalyptic number.

672539 is a deficient number, since it is larger than the sum of its proper divisors (122821).

672539 is a wasteful number, since it uses less digits than its factorization.

672539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3349.

The product of its digits is 11340, while the sum is 32.

The square root of 672539 is about 820.0847517178. The cubic root of 672539 is about 87.6137948015.

The spelling of 672539 in words is "six hundred seventy-two thousand, five hundred thirty-nine".