2106579 has 4 divisors (see below), whose sum is σ = 2808776. Its totient is φ = 1404384.

The previous prime is 2106563. The next prime is 2106617. The reversal of 2106579 is 9756012.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2106579 - 2⁴ = 2106563 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2106529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351094 + ... + 351099.

It is an arithmetic number, because the mean of its divisors is an integer number (702194).

2^2106579 is an apocalyptic number.

2106579 is a deficient number, since it is larger than the sum of its proper divisors (702197).

2106579 is an equidigital number, since it uses as much as digits as its factorization.

2106579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702196.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 2106579 is about 1451.4058701824. The cubic root of 2106579 is about 128.1915061428.

The spelling of 2106579 in words is "two million, one hundred six thousand, five hundred seventy-nine".