2606642220 has 192 divisors, whose sum is σ = 9167155200. Its totient is φ = 549916416.

The previous prime is 2606642219. The next prime is 2606642251. The reversal of 2606642220 is 222466062.

2606642220 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 262669 + ... + 272411.

It is an arithmetic number, because the mean of its divisors is an integer number (47745600).

Almost surely, 2^2606642220 is an apocalyptic number.

2606642220 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 2606642220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4583577600).

2606642220 is an abundant number, since it is smaller than the sum of its proper divisors (6560512980).

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

2606642220 is a wasteful number, since it uses less digits than its factorization.

2606642220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9789 (or 9773 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 2606642220 is about 51055.2859163476. The cubic root of 2606642220 is about 1376.2388341456.

It can be divided in two parts, 26066 and 42220, that added together give a palindrome (68286).

The spelling of 2606642220 in words is "two billion, six hundred six million, six hundred forty-two thousand, two hundred twenty".