2606781912 has 128 divisors (see below), whose sum is σ = 8181043200. Its totient is φ = 674898048.

The previous prime is 2606781857. The next prime is 2606781923. The reversal of 2606781912 is 2191876062.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55663 + ... + 91169.

It is an arithmetic number, because the mean of its divisors is an integer number (63914400).

Almost surely, 2^2606781912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2606781912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4090521600).

2606781912 is an abundant number, since it is smaller than the sum of its proper divisors (5574261288).

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

2606781912 is a wasteful number, since it uses less digits than its factorization.

2606781912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35565 (or 35561 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 2606781912 is about 51056.6539444175. The cubic root of 2606781912 is about 1376.2634182792.

The spelling of 2606781912 in words is "two billion, six hundred six million, seven hundred eighty-one thousand, nine hundred twelve".