6286421 has 4 divisors (see below), whose sum is σ = 6325152. Its totient is φ = 6247692.

The previous prime is 6286403. The next prime is 6286433. The reversal of 6286421 is 1246826.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6286421 - 2¹⁰ = 6285397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6286451) 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, 19121 + ... + 19446.

It is an arithmetic number, because the mean of its divisors is an integer number (1581288).

Almost surely, 2^6286421 is an apocalyptic number.

It is an amenable number.

6286421 is a deficient number, since it is larger than the sum of its proper divisors (38731).

6286421 is a wasteful number, since it uses less digits than its factorization.

6286421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38730.

The product of its digits is 4608, while the sum is 29.

The square root of 6286421 is about 2507.2736188936. The cubic root of 6286421 is about 184.5586851210.

The spelling of 6286421 in words is "six million, two hundred eighty-six thousand, four hundred twenty-one".