2676487861 has 4 divisors (see below), whose sum is σ = 2686437900. Its totient is φ = 2666537824.

The previous prime is 2676487843. The next prime is 2676487867. The reversal of 2676487861 is 1687846762.

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 1246513636 + 1429974225 = 35306^2 + 37815^2 .

It is a cyclic number.

It is not a de Polignac number, because 2676487861 - 2¹⁷ = 2676356789 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 (2676487867) 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, 4974616 + ... + 4975153.

It is an arithmetic number, because the mean of its divisors is an integer number (671609475).

Almost surely, 2^2676487861 is an apocalyptic number.

It is an amenable number.

2676487861 is a deficient number, since it is larger than the sum of its proper divisors (9950039).

2676487861 is an equidigital number, since it uses as much as digits as its factorization.

2676487861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9950038.

The product of its digits is 5419008, while the sum is 55.

The square root of 2676487861 is about 51734.7838596046. The cubic root of 2676487861 is about 1388.4228719605.

The spelling of 2676487861 in words is "two billion, six hundred seventy-six million, four hundred eighty-seven thousand, eight hundred sixty-one".