2660422320 has 240 divisors, whose sum is σ = 9359400960. Its totient is φ = 702266112.

The previous prime is 2660422319. The next prime is 2660422333. The reversal of 2660422320 is 232240662.

2660422320 is a `hidden beast` number, since 2 + 6 + 604 + 22 + 32 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2079441 + ... + 2080719.

It is an arithmetic number, because the mean of its divisors is an integer number (38997504).

Almost surely, 2^2660422320 is an apocalyptic number.

2660422320 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 2660422320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4679700480).

2660422320 is an abundant number, since it is smaller than the sum of its proper divisors (6698978640).

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

2660422320 is a wasteful number, since it uses less digits than its factorization.

2660422320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414 (or 1396 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 2660422320 is about 51579.2818872074. The cubic root of 2660422320 is about 1385.6393057021.

Adding to 2660422320 its reverse (232240662), we get a palindrome (2892662982).

The spelling of 2660422320 in words is "two billion, six hundred sixty million, four hundred twenty-two thousand, three hundred twenty".