2680668913 has 8 divisors (see below), whose sum is σ = 2887486056. Its totient is φ = 2473939200.

The previous prime is 2680668901. The next prime is 2680668931. The reversal of 2680668913 is 3198660862.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 74770609 + 2605898304 = 8647^2 + 51048^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2680668913 is a prime.

It is a super-2 number, since 2×2680668913² = 14371971642249203138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2680668313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50793 + ... + 89113.

It is an arithmetic number, because the mean of its divisors is an integer number (360935757).

Almost surely, 2^2680668913 is an apocalyptic number.

It is an amenable number.

2680668913 is a deficient number, since it is larger than the sum of its proper divisors (206817143).

2680668913 is a wasteful number, since it uses less digits than its factorization.

2680668913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43715.

The product of its (nonzero) digits is 746496, while the sum is 49.

The square root of 2680668913 is about 51775.1766100320. The cubic root of 2680668913 is about 1389.1454666902.

The spelling of 2680668913 in words is "two billion, six hundred eighty million, six hundred sixty-eight thousand, nine hundred thirteen".