2676666691 has 16 divisors (see below), whose sum is σ = 2794205664. Its totient is φ = 2561704704.

The previous prime is 2676666689. The next prime is 2676666719. The reversal of 2676666691 is 1966666762.

2676666691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2676666691 - 2¹ = 2676666689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2676666491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1195425 + ... + 1197661.

It is an arithmetic number, because the mean of its divisors is an integer number (174637854).

Almost surely, 2^2676666691 is an apocalyptic number.

2676666691 is a deficient number, since it is larger than the sum of its proper divisors (117538973).

2676666691 is a wasteful number, since it uses less digits than its factorization.

2676666691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790.

The product of its digits is 5878656, while the sum is 55.

The square root of 2676666691 is about 51736.5121650078. The cubic root of 2676666691 is about 1388.4537938434.

The spelling of 2676666691 in words is "two billion, six hundred seventy-six million, six hundred sixty-six thousand, six hundred ninety-one".