6612320 has 144 divisors (see below), whose sum is σ = 19495728. Its totient is φ = 2088960.

The previous prime is 6612313. The next prime is 6612341. The reversal of 6612320 is 232166.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 6612292 and 6612301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 388952 + ... + 388968.

It is an arithmetic number, because the mean of its divisors is an integer number (135387).

Almost surely, 2^6612320 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 6612320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9747864).

6612320 is an abundant number, since it is smaller than the sum of its proper divisors (12883408).

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

6612320 is a wasteful number, since it uses less digits than its factorization.

6612320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 6612320 is about 2571.4431745617. The cubic root of 6612320 is about 187.6943880309.

Adding to 6612320 its reverse (232166), we get a palindrome (6844486).

The spelling of 6612320 in words is "six million, six hundred twelve thousand, three hundred twenty".