2666760720 has 160 divisors (see below), whose sum is σ = 9071419392. Its totient is φ = 644007936.

The previous prime is 2666760697. The next prime is 2666760721. The reversal of 2666760720 is 270676662.

It is a super-2 number, since 2×2666760720² = 14223225475469836800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2666760721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157297 + ... + 173423.

Almost surely, 2^2666760720 is an apocalyptic number.

2666760720 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 2666760720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4535709696).

2666760720 is an abundant number, since it is smaller than the sum of its proper divisors (6404658672).

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

2666760720 is a wasteful number, since it uses less digits than its factorization.

2666760720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16209 (or 16203 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 2666760720 is about 51640.6886088867. The cubic root of 2666760720 is about 1386.7388517444.

The spelling of 2666760720 in words is "two billion, six hundred sixty-six million, seven hundred sixty thousand, seven hundred twenty".