667646673343 has 48 divisors (see below), whose sum is σ = 778139931520. Its totient is φ = 567849196224.

The previous prime is 667646673301. The next prime is 667646673361. The reversal of 667646673343 is 343376646766.

It is not a de Polignac number, because 667646673343 - 2¹³ = 667646665151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667646673443) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88932796 + ... + 88940302.

Almost surely, 2^667646673343 is an apocalyptic number.

667646673343 is a deficient number, since it is larger than the sum of its proper divisors (110493258177).

667646673343 is a wasteful number, since it uses less digits than its factorization.

667646673343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7796 (or 7749 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 61.

The spelling of 667646673343 in words is "six hundred sixty-seven billion, six hundred forty-six million, six hundred seventy-three thousand, three hundred forty-three".