2606780 has 72 divisors (see below), whose sum is σ = 6498576. Its totient is φ = 870400.

The previous prime is 2606771. The next prime is 2606783. The reversal of 2606780 is 876062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2606783) 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 23 ways as a sum of consecutive naturals, for example, 63560 + ... + 63600.

It is an arithmetic number, because the mean of its divisors is an integer number (90258).

2^2606780 is an apocalyptic number.

2606780 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 2606780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3249288).

2606780 is an abundant number, since it is smaller than the sum of its proper divisors (3891796).

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

2606780 is a wasteful number, since it uses less digits than its factorization.

2606780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 2606780 is about 1614.5525695994. The cubic root of 2606780 is about 137.6263081796.

The spelling of 2606780 in words is "two million, six hundred six thousand, seven hundred eighty".