2644105 has 4 divisors (see below), whose sum is σ = 3172932. Its totient is φ = 2115280.

The previous prime is 2644093. The next prime is 2644121. The reversal of 2644105 is 5014462.

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 1382976 + 1261129 = 1176^2 + 1123^2 .

It is not a de Polignac number, because 2644105 - 2⁵ = 2644073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264406 + ... + 264415.

It is an arithmetic number, because the mean of its divisors is an integer number (793233).

2^2644105 is an apocalyptic number.

It is an amenable number.

2644105 is a deficient number, since it is larger than the sum of its proper divisors (528827).

2644105 is an equidigital number, since it uses as much as digits as its factorization.

2644105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528826.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2644105 is about 1626.0704166794. The cubic root of 2644105 is about 138.2800620675.

Adding to 2644105 its reverse (5014462), we get a palindrome (7658567).

The spelling of 2644105 in words is "two million, six hundred forty-four thousand, one hundred five".