6315421 has 8 divisors (see below), whose sum is σ = 7238144. Its totient is φ = 5397840.

The previous prime is 6315403. The next prime is 6315433. The reversal of 6315421 is 1245136.

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

It is not a de Polignac number, because 6315421 - 2⁵ = 6315389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6315392 and 6315401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6315451) 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, 1876 + ... + 4018.

It is an arithmetic number, because the mean of its divisors is an integer number (904768).

Almost surely, 2^6315421 is an apocalyptic number.

It is an amenable number.

6315421 is a deficient number, since it is larger than the sum of its proper divisors (922723).

6315421 is a wasteful number, since it uses less digits than its factorization.

6315421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571.

The product of its digits is 720, while the sum is 22.

The square root of 6315421 is about 2513.0501387756. The cubic root of 6315421 is about 184.8420468189.

The spelling of 6315421 in words is "six million, three hundred fifteen thousand, four hundred twenty-one".