675723 has 4 divisors (see below), whose sum is σ = 900968. Its totient is φ = 450480.

The previous prime is 675713. The next prime is 675739. The reversal of 675723 is 327576.

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

It is not a de Polignac number, because 675723 - 2¹⁰ = 674699 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

675723 is a lucky number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675713) 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, 112618 + ... + 112623.

It is an arithmetic number, because the mean of its divisors is an integer number (225242).

2⁶⁷⁵⁷²³ is an apocalyptic number.

675723 is a deficient number, since it is larger than the sum of its proper divisors (225245).

675723 is a wasteful number, since it uses less digits than its factorization.

675723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225244.

The product of its digits is 8820, while the sum is 30.

The square root of 675723 is about 822.0237222854. The cubic root of 675723 is about 87.7518404497.

The spelling of 675723 in words is "six hundred seventy-five thousand, seven hundred twenty-three".