674423 has 4 divisors (see below), whose sum is σ = 683040. Its totient is φ = 665808.

The previous prime is 674419. The next prime is 674431. The reversal of 674423 is 324476.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 674423 - 2² = 674419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 674392 and 674401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674483) 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, 4190 + ... + 4347.

It is an arithmetic number, because the mean of its divisors is an integer number (170760).

2⁶⁷⁴⁴²³ is an apocalyptic number.

674423 is a deficient number, since it is larger than the sum of its proper divisors (8617).

674423 is an equidigital number, since it uses as much as digits as its factorization.

674423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8616.

The product of its digits is 4032, while the sum is 26.

The square root of 674423 is about 821.2326101660. The cubic root of 674423 is about 87.6955300842.

Adding to 674423 its reverse (324476), we get a palindrome (998899).

The spelling of 674423 in words is "six hundred seventy-four thousand, four hundred twenty-three".