2680577261 has 4 divisors (see below), whose sum is σ = 2680876092. Its totient is φ = 2680278432.

The previous prime is 2680577257. The next prime is 2680577309. The reversal of 2680577261 is 1627750862.

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 46321636 + 2634255625 = 6806^2 + 51325^2 .

It is a cyclic number.

It is not a de Polignac number, because 2680577261 - 2² = 2680577257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2680577231) 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, 135530 + ... + 154043.

It is an arithmetic number, because the mean of its divisors is an integer number (670219023).

Almost surely, 2^2680577261 is an apocalyptic number.

It is an amenable number.

2680577261 is a deficient number, since it is larger than the sum of its proper divisors (298831).

2680577261 is an equidigital number, since it uses as much as digits as its factorization.

2680577261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298830.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 2680577261 is about 51774.2915064996. The cubic root of 2680577261 is about 1389.1296348941.

The spelling of 2680577261 in words is "two billion, six hundred eighty million, five hundred seventy-seven thousand, two hundred sixty-one".