2679691 has 4 divisors (see below), whose sum is σ = 3062512. Its totient is φ = 2296872.

The previous prime is 2679673. The next prime is 2679697. The reversal of 2679691 is 1969762.

2679691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1969762 = 2 ⋅984881.

It is a cyclic number.

It is not a de Polignac number, because 2679691 - 2¹¹ = 2677643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2679697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191400 + ... + 191413.

It is an arithmetic number, because the mean of its divisors is an integer number (765628).

2^2679691 is an apocalyptic number.

2679691 is a deficient number, since it is larger than the sum of its proper divisors (382821).

2679691 is an equidigital number, since it uses as much as digits as its factorization.

2679691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382820.

The product of its digits is 40824, while the sum is 40.

The square root of 2679691 is about 1636.9761757582. The cubic root of 2679691 is about 138.8976525196.

The spelling of 2679691 in words is "two million, six hundred seventy-nine thousand, six hundred ninety-one".