6666723424 has 12 divisors (see below), whose sum is σ = 13125111804. Its totient is φ = 3333361696.

The previous prime is 6666723331. The next prime is 6666723431. The reversal of 6666723424 is 4243276666.

It is a super-2 number, since 2×6666723424² = 88890402424220567552, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104167522 + ... + 104167585.

It is an arithmetic number, because the mean of its divisors is an integer number (1093759317).

Almost surely, 2^6666723424 is an apocalyptic number.

It is an amenable number.

6666723424 is a deficient number, since it is larger than the sum of its proper divisors (6458388380).

6666723424 is a wasteful number, since it uses less digits than its factorization.

6666723424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208335117 (or 208335109 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 46.

The square root of 6666723424 is about 81650.0056582974. The cubic root of 6666723424 is about 1882.0773988165.

The spelling of 6666723424 in words is "six billion, six hundred sixty-six million, seven hundred twenty-three thousand, four hundred twenty-four".