6667438 has 8 divisors (see below), whose sum is σ = 10150632. Its totient is φ = 3283896.

The previous prime is 6667429. The next prime is 6667439. The reversal of 6667438 is 8347666.

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

It is a d-powerful number, because it can be written as 6⁵ + 6⁶ + 6⁸ + 7⁶ + 4 + 3¹⁴ + 8⁵ .

It is a self number, because there is not a number n which added to its sum of digits gives 6667438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6667439) 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, 24745 + ... + 25012.

It is an arithmetic number, because the mean of its divisors is an integer number (1268829).

Almost surely, 2^6667438 is an apocalyptic number.

6667438 is a deficient number, since it is larger than the sum of its proper divisors (3483194).

6667438 is a wasteful number, since it uses less digits than its factorization.

6667438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49826.

The product of its digits is 145152, while the sum is 40.

The square root of 6667438 is about 2582.1382612091. The cubic root of 6667438 is about 188.2144640209.

The spelling of 6667438 in words is "six million, six hundred sixty-seven thousand, four hundred thirty-eight".