6443164 has 48 divisors (see below), whose sum is σ = 14350336. Its totient is φ = 2462400.

The previous prime is 6443159. The next prime is 6443167. The reversal of 6443164 is 4613446.

6443164 = T₁₂₇ + T₁₂₈ + ... + T₃₄₃.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6443167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10999 + ... + 11569.

Almost surely, 2^6443164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6443164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7175168).

6443164 is an abundant number, since it is smaller than the sum of its proper divisors (7907172).

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

6443164 is a wasteful number, since it uses less digits than its factorization.

6443164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 624 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 6443164 is about 2538.3388268708. The cubic root of 6443164 is about 186.0800133647.

The spelling of 6443164 in words is "six million, four hundred forty-three thousand, one hundred sixty-four".