674663 has 4 divisors (see below), whose sum is σ = 736008. Its totient is φ = 613320.

The previous prime is 674647. The next prime is 674669. The reversal of 674663 is 366476.

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 674663 - 2⁴ = 674647 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674669) 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, 30656 + ... + 30677.

It is an arithmetic number, because the mean of its divisors is an integer number (184002).

2⁶⁷⁴⁶⁶³ is an apocalyptic number.

674663 is a deficient number, since it is larger than the sum of its proper divisors (61345).

674663 is a wasteful number, since it uses less digits than its factorization.

674663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61344.

The product of its digits is 18144, while the sum is 32.

The square root of 674663 is about 821.3787189841. The cubic root of 674663 is about 87.7059312869.

The spelling of 674663 in words is "six hundred seventy-four thousand, six hundred sixty-three".