6641272 has 32 divisors (see below), whose sum is σ = 13697280. Its totient is φ = 2993760.

The previous prime is 6641267. The next prime is 6641287. The reversal of 6641272 is 2721466.

It is a self number, because there is not a number n which added to its sum of digits gives 6641272.

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, 14113 + ... + 14575.

It is an arithmetic number, because the mean of its divisors is an integer number (428040).

Almost surely, 2^6641272 is an apocalyptic number.

6641272 is the 1378-th centered heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6641272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6848640).

6641272 is an abundant number, since it is smaller than the sum of its proper divisors (7056008).

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

6641272 is a wasteful number, since it uses less digits than its factorization.

6641272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643 (or 639 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 6641272 is about 2577.0665493929. The cubic root of 6641272 is about 187.9679287378.

It can be divided in two parts, 664 and 1272, that added together give a square (1936 = 44²).

The spelling of 6641272 in words is "six million, six hundred forty-one thousand, two hundred seventy-two".