2660320 has 48 divisors (see below), whose sum is σ = 6773760. Its totient is φ = 981504.

The previous prime is 2660311. The next prime is 2660351. The reversal of 2660320 is 230662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1441 + ... + 2719.

It is an arithmetic number, because the mean of its divisors is an integer number (141120).

2^2660320 is an apocalyptic number.

2660320 is a gapful number since it is divisible by the number (20) 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 2660320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3386880).

2660320 is an abundant number, since it is smaller than the sum of its proper divisors (4113440).

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

2660320 is a wasteful number, since it uses less digits than its factorization.

2660320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307 (or 1299 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2660320 is about 1631.0487423741. The cubic root of 2660320 is about 138.5621541551.

Adding to 2660320 its reverse (230662), we get a palindrome (2890982).

The spelling of 2660320 in words is "two million, six hundred sixty thousand, three hundred twenty".