6421163 has 8 divisors (see below), whose sum is σ = 7657728. Its totient is φ = 5264424.

The previous prime is 6421159. The next prime is 6421201. The reversal of 6421163 is 3611246.

It is a happy number.

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

It is not a de Polignac number, because 6421163 - 2² = 6421159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6421763) 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, 19781 + ... + 20102.

It is an arithmetic number, because the mean of its divisors is an integer number (957216).

Almost surely, 2^6421163 is an apocalyptic number.

6421163 is a deficient number, since it is larger than the sum of its proper divisors (1236565).

6421163 is a wasteful number, since it uses less digits than its factorization.

6421163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39913.

The product of its digits is 864, while the sum is 23.

The square root of 6421163 is about 2534.0013812151. The cubic root of 6421163 is about 185.8679739071.

The spelling of 6421163 in words is "six million, four hundred twenty-one thousand, one hundred sixty-three".