2691776879 has 8 divisors (see below), whose sum is σ = 2991889872. Its totient is φ = 2400898240.

The previous prime is 2691776849. The next prime is 2691776881. The reversal of 2691776879 is 9786771962.

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-2691776879 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 (2691776849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2307974 + ... + 2309139.

It is an arithmetic number, because the mean of its divisors is an integer number (373986234).

Almost surely, 2^2691776879 is an apocalyptic number.

2691776879 is a deficient number, since it is larger than the sum of its proper divisors (300112993).

2691776879 is a wasteful number, since it uses less digits than its factorization.

2691776879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4617177.

The product of its digits is 16003008, while the sum is 62.

The square root of 2691776879 is about 51882.3368691118. The cubic root of 2691776879 is about 1391.0615700536.

The spelling of 2691776879 in words is "two billion, six hundred ninety-one million, seven hundred seventy-six thousand, eight hundred seventy-nine".