2680971305 has 4 divisors (see below), whose sum is σ = 3217165572. Its totient is φ = 2144777040.

The previous prime is 2680971301. The next prime is 2680971311. The reversal of 2680971305 is 5031790862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 678498304 + 2002473001 = 26048^2 + 44749^2 .

It is not a de Polignac number, because 2680971305 - 2² = 2680971301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2680971301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268097126 + ... + 268097135.

It is an arithmetic number, because the mean of its divisors is an integer number (804291393).

Almost surely, 2^2680971305 is an apocalyptic number.

It is an amenable number.

2680971305 is a deficient number, since it is larger than the sum of its proper divisors (536194267).

2680971305 is an equidigital number, since it uses as much as digits as its factorization.

2680971305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536194266.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 2680971305 is about 51778.0967688076. The cubic root of 2680971305 is about 1389.1976987631.

The spelling of 2680971305 in words is "two billion, six hundred eighty million, nine hundred seventy-one thousand, three hundred five".