2679889693 has 4 divisors (see below), whose sum is σ = 2886035068. Its totient is φ = 2473744320.

The previous prime is 2679889691. The next prime is 2679889699. The reversal of 2679889693 is 3969889762.

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 1816293924 + 863595769 = 42618^2 + 29387^2 .

It is a cyclic number.

It is not a de Polignac number, because 2679889693 - 2¹ = 2679889691 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 (2679889691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103072668 + ... + 103072693.

It is an arithmetic number, because the mean of its divisors is an integer number (721508767).

Almost surely, 2^2679889693 is an apocalyptic number.

It is an amenable number.

2679889693 is a deficient number, since it is larger than the sum of its proper divisors (206145375).

2679889693 is a wasteful number, since it uses less digits than its factorization.

2679889693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206145374.

The product of its digits is 70543872, while the sum is 67.

The square root of 2679889693 is about 51767.6510284174. The cubic root of 2679889693 is about 1389.0108541656.

The spelling of 2679889693 in words is "two billion, six hundred seventy-nine million, eight hundred eighty-nine thousand, six hundred ninety-three".