6421267 has 8 divisors (see below), whose sum is σ = 6685200. Its totient is φ = 6160224.

The previous prime is 6421249. The next prime is 6421271. The reversal of 6421267 is 7621246.

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

It is a cyclic number.

It is not a de Polignac number, because 6421267 - 2⁷ = 6421139 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6421237) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 4573 + ... + 5809.

It is an arithmetic number, because the mean of its divisors is an integer number (835650).

Almost surely, 2^6421267 is an apocalyptic number.

6421267 is a deficient number, since it is larger than the sum of its proper divisors (263933).

6421267 is a wasteful number, since it uses less digits than its factorization.

6421267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445.

The product of its digits is 4032, while the sum is 28.

The square root of 6421267 is about 2534.0219020364. The cubic root of 6421267 is about 185.8689773683.

The spelling of 6421267 in words is "six million, four hundred twenty-one thousand, two hundred sixty-seven".