674731 has 2 divisors, whose sum is σ = 674732. Its totient is φ = 674730.

The previous prime is 674719. The next prime is 674741. The reversal of 674731 is 137476.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 674731 - 2⁵ = 674699 is a prime.

It is a super-2 number, since 2×674731² = 910523844722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 674731.

It is not a weakly prime, because it can be changed into another prime (674701) 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 as a sum of consecutive naturals, namely, 337365 + 337366.

It is an arithmetic number, because the mean of its divisors is an integer number (337366).

2⁶⁷⁴⁷³¹ is an apocalyptic number.

674731 is a deficient number, since it is larger than the sum of its proper divisors (1).

674731 is an equidigital number, since it uses as much as digits as its factorization.

674731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 28.

The square root of 674731 is about 821.4201117577. The cubic root of 674731 is about 87.7088778459.

The spelling of 674731 in words is "six hundred seventy-four thousand, seven hundred thirty-one".