6421371 has 16 divisors (see below), whose sum is σ = 9643008. Its totient is φ = 3765600.

The previous prime is 6421369. The next prime is 6421403. The reversal of 6421371 is 1731246.

It is not a de Polignac number, because 6421371 - 2¹ = 6421369 is a prime.

6421371 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6421351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2116 + ... + 4161.

It is an arithmetic number, because the mean of its divisors is an integer number (602688).

Almost surely, 2^6421371 is an apocalyptic number.

6421371 is a deficient number, since it is larger than the sum of its proper divisors (3221637).

6421371 is a wasteful number, since it uses less digits than its factorization.

6421371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6322.

The product of its digits is 1008, while the sum is 24.

The square root of 6421371 is about 2534.0424226915. The cubic root of 6421371 is about 185.8699808187.

The spelling of 6421371 in words is "six million, four hundred twenty-one thousand, three hundred seventy-one".