674042723 has 4 divisors (see below), whose sum is σ = 674122848. Its totient is φ = 673962600.

The previous prime is 674042701. The next prime is 674042729. The reversal of 674042723 is 327240476.

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 674042723 - 2¹⁰ = 674041699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (674042729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25736 + ... + 44837.

It is an arithmetic number, because the mean of its divisors is an integer number (168530712).

Almost surely, 2^674042723 is an apocalyptic number.

674042723 is a deficient number, since it is larger than the sum of its proper divisors (80125).

674042723 is an equidigital number, since it uses as much as digits as its factorization.

674042723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80124.

The product of its (nonzero) digits is 56448, while the sum is 35.

The square root of 674042723 is about 25962.3327726921. The cubic root of 674042723 is about 876.7904445474.

The spelling of 674042723 in words is "six hundred seventy-four million, forty-two thousand, seven hundred twenty-three".