2640880960 has 28 divisors (see below), whose sum is σ = 6288598548. Its totient is φ = 1056352256.

The previous prime is 2640880937. The next prime is 2640880973. The reversal of 2640880960 is 690880462.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 987970624 + 1652910336 = 31432^2 + 40656^2 .

It is a super-3 number, since 3×2640880960³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4126057 + ... + 4126696.

Almost surely, 2^2640880960 is an apocalyptic number.

2640880960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640880960 is an abundant number, since it is smaller than the sum of its proper divisors (3647717588).

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

2640880960 is an equidigital number, since it uses as much as digits as its factorization.

2640880960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8252770 (or 8252760 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 2640880960 is about 51389.5024299710. The cubic root of 2640880960 is about 1382.2383613915.

It can be divided in two parts, 2640 and 880960, that added together give a square (883600 = 940²).

The spelling of 2640880960 in words is "two billion, six hundred forty million, eight hundred eighty thousand, nine hundred sixty".