6651120 has 160 divisors (see below), whose sum is σ = 24427008. Its totient is φ = 1465344.

The previous prime is 6651119. The next prime is 6651133. The reversal of 6651120 is 211566.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62107 + ... + 62213.

Almost surely, 2^6651120 is an apocalyptic number.

6651120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6651120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12213504).

6651120 is an abundant number, since it is smaller than the sum of its proper divisors (17775888).

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

6651120 is a wasteful number, since it uses less digits than its factorization.

6651120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 6651120 is about 2578.9765411884. The cubic root of 6651120 is about 188.0607921704.

Adding to 6651120 its reverse (211566), we get a palindrome (6862686).

The spelling of 6651120 in words is "six million, six hundred fifty-one thousand, one hundred twenty".