6421337 has 8 divisors (see below), whose sum is σ = 6956040. Its totient is φ = 5892480.

The previous prime is 6421279. The next prime is 6421339. The reversal of 6421337 is 7331246.

It can be written as a sum of positive squares in 4 ways, for example, as 151321 + 6270016 = 389^2 + 2504^2 .

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 6421337 - 2²⁰ = 5372761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6421339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 989 + ... + 3717.

It is an arithmetic number, because the mean of its divisors is an integer number (869505).

Almost surely, 2^6421337 is an apocalyptic number.

It is an amenable number.

6421337 is a deficient number, since it is larger than the sum of its proper divisors (534703).

6421337 is a wasteful number, since it uses less digits than its factorization.

6421337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2923.

The product of its digits is 3024, while the sum is 26.

The square root of 6421337 is about 2534.0357140340. The cubic root of 6421337 is about 185.8696527688.

Subtracting 6421337 from its reverse (7331246), we obtain a palindrome (909909).

The spelling of 6421337 in words is "six million, four hundred twenty-one thousand, three hundred thirty-seven".