674567813 has 2 divisors, whose sum is σ = 674567814. Its totient is φ = 674567812.

The previous prime is 674567801. The next prime is 674567857. The reversal of 674567813 is 318765476.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 670965409 + 3602404 = 25903^2 + 1898^2 .

It is a cyclic number.

It is not a de Polignac number, because 674567813 - 2⁴ = 674567797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674567213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337283906 + 337283907.

It is an arithmetic number, because the mean of its divisors is an integer number (337283907).

Almost surely, 2^674567813 is an apocalyptic number.

It is an amenable number.

674567813 is a deficient number, since it is larger than the sum of its proper divisors (1).

674567813 is an equidigital number, since it uses as much as digits as its factorization.

674567813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 47.

The square root of 674567813 is about 25972.4433390469. The cubic root of 674567813 is about 877.0180633511.

The spelling of 674567813 in words is "six hundred seventy-four million, five hundred sixty-seven thousand, eight hundred thirteen".