2660835280 has 20 divisors (see below), whose sum is σ = 6186442212. Its totient is φ = 1064334080.

The previous prime is 2660835251. The next prime is 2660835283. The reversal of 2660835280 is 825380662.

It can be written as a sum of positive squares in 2 ways, for example, as 733976464 + 1926858816 = 27092^2 + 43896^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660835283) 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 3 ways as a sum of consecutive naturals, for example, 16630141 + ... + 16630300.

Almost surely, 2^2660835280 is an apocalyptic number.

2660835280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2660835280 is an abundant number, since it is smaller than the sum of its proper divisors (3525606932).

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

2660835280 is a wasteful number, since it uses less digits than its factorization.

2660835280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33260454 (or 33260448 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 2660835280 is about 51583.2848895841. The cubic root of 2660835280 is about 1385.7109965760.

The spelling of 2660835280 in words is "two billion, six hundred sixty million, eight hundred thirty-five thousand, two hundred eighty".