6651072 has 70 divisors (see below), whose sum is σ = 19731228. Its totient is φ = 2215296.

The previous prime is 6651053. The next prime is 6651077. The reversal of 6651072 is 2701566.

6651072 is a `hidden beast` number, since 6 + 651 + 0 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (6651077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4543 + ... + 5825.

Almost surely, 2^6651072 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 6651072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9865614).

6651072 is an abundant number, since it is smaller than the sum of its proper divisors (13080156).

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

6651072 is a wasteful number, since it uses less digits than its factorization.

6651072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307 (or 1288 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 6651072 is about 2578.9672351544. The cubic root of 6651072 is about 188.0603397684.

The spelling of 6651072 in words is "six million, six hundred fifty-one thousand, seventy-two".