674647 has 2 divisors, whose sum is σ = 674648. Its totient is φ = 674646.

The previous prime is 674603. The next prime is 674669. The reversal of 674647 is 746476.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-674647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674677) 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, 337323 + 337324.

It is an arithmetic number, because the mean of its divisors is an integer number (337324).

2⁶⁷⁴⁶⁴⁷ is an apocalyptic number.

674647 is a deficient number, since it is larger than the sum of its proper divisors (1).

674647 is an equidigital number, since it uses as much as digits as its factorization.

674647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 34.

The square root of 674647 is about 821.3689792048. The cubic root of 674647 is about 87.7052379502.

The spelling of 674647 in words is "six hundred seventy-four thousand, six hundred forty-seven".