2605622720 has 56 divisors (see below), whose sum is σ = 6209288064. Its totient is φ = 1041468416.

The previous prime is 2605622683. The next prime is 2605622737. The reversal of 2605622720 is 272265062.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 629297 + ... + 633423.

It is an arithmetic number, because the mean of its divisors is an integer number (110880144).

Almost surely, 2^2605622720 is an apocalyptic number.

2605622720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2605622720 is an abundant number, since it is smaller than the sum of its proper divisors (3603665344).

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

2605622720 is a wasteful number, since it uses less digits than its factorization.

2605622720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6117 (or 6107 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 2605622720 is about 51045.3006651935. The cubic root of 2605622720 is about 1376.0593876477.

Adding to 2605622720 its reverse (272265062), we get a palindrome (2877887782).

The spelling of 2605622720 in words is "two billion, six hundred five million, six hundred twenty-two thousand, seven hundred twenty".