674491 has 4 divisors (see below), whose sum is σ = 690984. Its totient is φ = 658000.

The previous prime is 674483. The next prime is 674501. The reversal of 674491 is 194476.

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 674491 - 2³ = 674483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (674431) 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, 8185 + ... + 8266.

It is an arithmetic number, because the mean of its divisors is an integer number (172746).

2⁶⁷⁴⁴⁹¹ is an apocalyptic number.

674491 is a deficient number, since it is larger than the sum of its proper divisors (16493).

674491 is a wasteful number, since it uses less digits than its factorization.

674491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16492.

The product of its digits is 6048, while the sum is 31.

The square root of 674491 is about 821.2740103035. The cubic root of 674491 is about 87.6984773421.

The spelling of 674491 in words is "six hundred seventy-four thousand, four hundred ninety-one".