673539 has 4 divisors (see below), whose sum is σ = 898056. Its totient is φ = 449024.

The previous prime is 673529. The next prime is 673549. The reversal of 673539 is 935376.

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

It is an interprime number because it is at equal distance from previous prime (673529) and next prime (673549).

It is a cyclic number.

It is not a de Polignac number, because 673539 - 2⁷ = 673411 is a prime.

It is an Ulam number.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (673529) 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, 112254 + ... + 112259.

It is an arithmetic number, because the mean of its divisors is an integer number (224514).

2⁶⁷³⁵³⁹ is an apocalyptic number.

673539 is a deficient number, since it is larger than the sum of its proper divisors (224517).

673539 is a wasteful number, since it uses less digits than its factorization.

673539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224516.

The product of its digits is 17010, while the sum is 33.

The square root of 673539 is about 820.6942183298. The cubic root of 673539 is about 87.6571976903.

The spelling of 673539 in words is "six hundred seventy-three thousand, five hundred thirty-nine".