6316221 has 4 divisors (see below), whose sum is σ = 8421632. Its totient is φ = 4210812.

The previous prime is 6316213. The next prime is 6316249. The reversal of 6316221 is 1226136.

It is a happy number.

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 not a de Polignac number, because 6316221 - 2³ = 6316213 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6316621) 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, 1052701 + ... + 1052706.

It is an arithmetic number, because the mean of its divisors is an integer number (2105408).

Almost surely, 2^6316221 is an apocalyptic number.

It is an amenable number.

6316221 is a deficient number, since it is larger than the sum of its proper divisors (2105411).

6316221 is a wasteful number, since it uses less digits than its factorization.

6316221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105410.

The product of its digits is 432, while the sum is 21.

The square root of 6316221 is about 2513.2093028636. The cubic root of 6316221 is about 184.8498513867.

The spelling of 6316221 in words is "six million, three hundred sixteen thousand, two hundred twenty-one".