6552620 has 48 divisors (see below), whose sum is σ = 14436576. Its totient is φ = 2496000.

The previous prime is 6552619. The next prime is 6552629. The reversal of 6552620 is 262556.

It is a happy number.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6552620.

It is not an unprimeable number, because it can be changed into a prime (6552629) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 49955 + ... + 50085.

It is an arithmetic number, because the mean of its divisors is an integer number (300762).

Almost surely, 2^6552620 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 6552620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7218288).

6552620 is an abundant number, since it is smaller than the sum of its proper divisors (7883956).

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

6552620 is a wasteful number, since it uses less digits than its factorization.

6552620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 6552620 is about 2559.8085865939. The cubic root of 6552620 is about 187.1278068595.

Subtracting from 6552620 its reverse (262556), we obtain a square (6290064 = 2508²).

It can be divided in two parts, 655 and 2620, that multiplied together give a square (1716100 = 1310²).

The spelling of 6552620 in words is "six million, five hundred fifty-two thousand, six hundred twenty".