6421164 has 24 divisors (see below), whose sum is σ = 15771840. Its totient is φ = 2027664.

The previous prime is 6421159. The next prime is 6421201. The reversal of 6421164 is 4611246.

It is a super-2 number, since 2×6421164² = 82462694229792, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13854 + ... + 14309.

It is an arithmetic number, because the mean of its divisors is an integer number (657160).

Almost surely, 2^6421164 is an apocalyptic number.

It is an amenable number.

6421164 is an abundant number, since it is smaller than the sum of its proper divisors (9350676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6421164 is a wasteful number, since it uses less digits than its factorization.

6421164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28189 (or 28187 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 6421164 is about 2534.0015785315. The cubic root of 6421164 is about 185.8679835558.

The spelling of 6421164 in words is "six million, four hundred twenty-one thousand, one hundred sixty-four".