2658679 has 4 divisors (see below), whose sum is σ = 2667384. Its totient is φ = 2649976.

The previous prime is 2658671. The next prime is 2658683. The reversal of 2658679 is 9768562.

2658679 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: 9768562 = 2 ⋅4884281.

It is a cyclic number.

It is not a de Polignac number, because 2658679 - 2³ = 2658671 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 (2658671) 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, 3877 + ... + 4510.

It is an arithmetic number, because the mean of its divisors is an integer number (666846).

2^2658679 is an apocalyptic number.

2658679 is a deficient number, since it is larger than the sum of its proper divisors (8705).

2658679 is an equidigital number, since it uses as much as digits as its factorization.

2658679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8704.

The product of its digits is 181440, while the sum is 43.

The square root of 2658679 is about 1630.5456142040. The cubic root of 2658679 is about 138.5336579261.

The spelling of 2658679 in words is "two million, six hundred fifty-eight thousand, six hundred seventy-nine".