2600561740 has 96 divisors (see below), whose sum is σ = 6762438144. Its totient is φ = 819624960.

The previous prime is 2600561731. The next prime is 2600561741. The reversal of 2600561740 is 471650062.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2600561741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89635 + ... + 115045.

It is an arithmetic number, because the mean of its divisors is an integer number (70442064).

Almost surely, 2^2600561740 is an apocalyptic number.

2600561740 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 2600561740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3381219072).

2600561740 is an abundant number, since it is smaller than the sum of its proper divisors (4161876404).

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

2600561740 is a wasteful number, since it uses less digits than its factorization.

2600561740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25487 (or 25485 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 2600561740 is about 50995.7031523245. The cubic root of 2600561740 is about 1375.1678895822.

The spelling of 2600561740 in words is "two billion, six hundred million, five hundred sixty-one thousand, seven hundred forty".