6443622 has 48 divisors (see below), whose sum is σ = 14938560. Its totient is φ = 2001456.

The previous prime is 6443621. The next prime is 6443639. The reversal of 6443622 is 2263446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6443621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28273 + ... + 28499.

It is an arithmetic number, because the mean of its divisors is an integer number (311220).

Almost surely, 2^6443622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6443622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7469280).

6443622 is an abundant number, since it is smaller than the sum of its proper divisors (8494938).

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

6443622 is a wasteful number, since it uses less digits than its factorization.

6443622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 334 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 6443622 is about 2538.4290417500. The cubic root of 6443622 is about 186.0844223076.

The spelling of 6443622 in words is "six million, four hundred forty-three thousand, six hundred twenty-two".