674943931 has 2 divisors, whose sum is σ = 674943932. Its totient is φ = 674943930.

The previous prime is 674943917. The next prime is 674943943. The reversal of 674943931 is 139349476.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 674943931 - 2⁷ = 674943803 is a prime.

It is a super-2 number, since 2×674943931² = 911098619987465522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (674943991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337471965 + 337471966.

It is an arithmetic number, because the mean of its divisors is an integer number (337471966).

Almost surely, 2^674943931 is an apocalyptic number.

674943931 is a deficient number, since it is larger than the sum of its proper divisors (1).

674943931 is an equidigital number, since it uses as much as digits as its factorization.

674943931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 46.

The square root of 674943931 is about 25979.6830427163. The cubic root of 674943931 is about 877.1810323838.

The spelling of 674943931 in words is "six hundred seventy-four million, nine hundred forty-three thousand, nine hundred thirty-one".