667116443 has 4 divisors (see below), whose sum is σ = 762418800. Its totient is φ = 571814088.

The previous prime is 667116427. The next prime is 667116451. The reversal of 667116443 is 344611766.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344611766 = 2 ⋅172305883.

It is a cyclic number.

It is not a de Polignac number, because 667116443 - 2⁴ = 667116427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 667116397 and 667116406.

It is not an unprimeable number, because it can be changed into a prime (667116473) 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 in 3 ways as a sum of consecutive naturals, for example, 47651168 + ... + 47651181.

It is an arithmetic number, because the mean of its divisors is an integer number (190604700).

Almost surely, 2^667116443 is an apocalyptic number.

667116443 is a deficient number, since it is larger than the sum of its proper divisors (95302357).

667116443 is an equidigital number, since it uses as much as digits as its factorization.

667116443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95302356.

The product of its digits is 72576, while the sum is 38.

The square root of 667116443 is about 25828.5973873921. The cubic root of 667116443 is about 873.7768784809.

The spelling of 667116443 in words is "six hundred sixty-seven million, one hundred sixteen thousand, four hundred forty-three".