667674347443 has 2 divisors, whose sum is σ = 667674347444. Its totient is φ = 667674347442.

The previous prime is 667674347437. The next prime is 667674347477. The reversal of 667674347443 is 344743476766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667674347443 - 2¹⁷ = 667674216371 is a prime.

It is not a weakly prime, because it can be changed into another prime (667674347423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333837173721 + 333837173722.

It is an arithmetic number, because the mean of its divisors is an integer number (333837173722).

Almost surely, 2^667674347443 is an apocalyptic number.

667674347443 is a deficient number, since it is larger than the sum of its proper divisors (1).

667674347443 is an equidigital number, since it uses as much as digits as its factorization.

667674347443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 170698752, while the sum is 61.

The spelling of 667674347443 in words is "six hundred sixty-seven billion, six hundred seventy-four million, three hundred forty-seven thousand, four hundred forty-three".