6642272 has 48 divisors (see below), whose sum is σ = 16101792. Its totient is φ = 2626560.

The previous prime is 6642211. The next prime is 6642281. The reversal of 6642272 is 2722466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1772 + ... + 4052.

It is an arithmetic number, because the mean of its divisors is an integer number (335454).

Almost surely, 2^6642272 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 6642272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8050896).

6642272 is an abundant number, since it is smaller than the sum of its proper divisors (9459520).

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

6642272 is a wasteful number, since it uses less digits than its factorization.

6642272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311 (or 2303 counting only the distinct ones).

The product of its digits is 8064, while the sum is 29.

The square root of 6642272 is about 2577.2605611385. The cubic root of 6642272 is about 187.9773625980.

The spelling of 6642272 in words is "six million, six hundred forty-two thousand, two hundred seventy-two".