2638105 has 8 divisors (see below), whose sum is σ = 3179592. Its totient is φ = 2101248.

The previous prime is 2638087. The next prime is 2638177. The reversal of 2638105 is 5018362.

2638105 = 1148² + 1149².

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 992016 + 1646089 = 996^2 + 1283^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2638105 - 2⁵ = 2638073 is a prime.

It is a Duffinian number.

2638105 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2638105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259 + ... + 2311.

It is an arithmetic number, because the mean of its divisors is an integer number (397449).

2^2638105 is an apocalyptic number.

2638105 is the 1149-th centered square number.

It is an amenable number.

2638105 is a deficient number, since it is larger than the sum of its proper divisors (541487).

2638105 is a wasteful number, since it uses less digits than its factorization.

2638105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2638105 is about 1624.2244303051. The cubic root of 2638105 is about 138.1753878665.

The spelling of 2638105 in words is "two million, six hundred thirty-eight thousand, one hundred five".