6667743407 has 32 divisors (see below), whose sum is σ = 7618437120. Its totient is φ = 5826768480.

The previous prime is 6667743343. The next prime is 6667743487. The reversal of 6667743407 is 7043477666.

It is not a de Polignac number, because 6667743407 - 2⁶ = 6667743343 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 (6667743487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3199988 + ... + 3202070.

It is an arithmetic number, because the mean of its divisors is an integer number (238076160).

Almost surely, 2^6667743407 is an apocalyptic number.

6667743407 is a deficient number, since it is larger than the sum of its proper divisors (950693713).

6667743407 is a wasteful number, since it uses less digits than its factorization.

6667743407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200 (or 2174 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 50.

The square root of 6667743407 is about 81656.2514875622. The cubic root of 6667743407 is about 1882.1733774522.

The spelling of 6667743407 in words is "six billion, six hundred sixty-seven million, seven hundred forty-three thousand, four hundred seven".