6622320 has 80 divisors (see below), whose sum is σ = 21061152. Its totient is φ = 1720320.

The previous prime is 6622309. The next prime is 6622339. The reversal of 6622320 is 232266.

6622320 is nontrivially palindromic in base 14.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9504 + ... + 10176.

Almost surely, 2^6622320 is an apocalyptic number.

6622320 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 6622320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10530576).

6622320 is an abundant number, since it is smaller than the sum of its proper divisors (14438832).

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

6622320 is a wasteful number, since it uses less digits than its factorization.

6622320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 6622320 is about 2573.3868733636. The cubic root of 6622320 is about 187.7889588970.

Adding to 6622320 its reverse (232266), we get a palindrome (6854586).

The spelling of 6622320 in words is "six million, six hundred twenty-two thousand, three hundred twenty".