2655222640 has 160 divisors (see below), whose sum is σ = 7550231040. Its totient is φ = 848102400.

The previous prime is 2655222637. The next prime is 2655222643. The reversal of 2655222640 is 462225562.

It is an interprime number because it is at equal distance from previous prime (2655222637) and next prime (2655222643).

It is a junction number, because it is equal to n+sod(n) for n = 2655222596 and 2655222605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2655222643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 646995 + ... + 651085.

It is an arithmetic number, because the mean of its divisors is an integer number (47188944).

Almost surely, 2^2655222640 is an apocalyptic number.

2655222640 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 2655222640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3775115520).

2655222640 is an abundant number, since it is smaller than the sum of its proper divisors (4895008400).

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

2655222640 is a wasteful number, since it uses less digits than its factorization.

2655222640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4191 (or 4185 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 2655222640 is about 51528.8525003226. The cubic root of 2655222640 is about 1384.7359929824.

The spelling of 2655222640 in words is "two billion, six hundred fifty-five million, two hundred twenty-two thousand, six hundred forty".