6667642 has 8 divisors (see below), whose sum is σ = 10061856. Its totient is φ = 3313692.

The previous prime is 6667637. The next prime is 6667643. The reversal of 6667642 is 2467666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (6667643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9648 + ... + 10315.

It is an arithmetic number, because the mean of its divisors is an integer number (1257732).

Almost surely, 2^6667642 is an apocalyptic number.

6667642 is a deficient number, since it is larger than the sum of its proper divisors (3394214).

6667642 is a wasteful number, since it uses less digits than its factorization.

6667642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20132.

The product of its digits is 72576, while the sum is 37.

The square root of 6667642 is about 2582.1777630520. The cubic root of 6667642 is about 188.2163835667.

The spelling of 6667642 in words is "six million, six hundred sixty-seven thousand, six hundred forty-two".