2660612280 has 128 divisors (see below), whose sum is σ = 8290900800. Its totient is φ = 682463232.

The previous prime is 2660612263. The next prime is 2660612287. The reversal of 2660612280 is 822160662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660612287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 391794 + ... + 398526.

Almost surely, 2^2660612280 is an apocalyptic number.

2660612280 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 2660612280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4145450400).

2660612280 is an abundant number, since it is smaller than the sum of its proper divisors (5630288520).

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

2660612280 is a wasteful number, since it uses less digits than its factorization.

2660612280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6873 (or 6869 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 2660612280 is about 51581.1232913747. The cubic root of 2660612280 is about 1385.6722841477.

The spelling of 2660612280 in words is "two billion, six hundred sixty million, six hundred twelve thousand, two hundred eighty".