2202605 has 8 divisors (see below), whose sum is σ = 2798712. Its totient is φ = 1658368.

The previous prime is 2202601. The next prime is 2202611. The reversal of 2202605 is 5062022.

It can be written as a sum of positive squares in 4 ways, for example, as 556516 + 1646089 = 746^2 + 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 2202605 - 2² = 2202601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12872 + ... + 13041.

It is an arithmetic number, because the mean of its divisors is an integer number (349839).

2^2202605 is an apocalyptic number.

It is an amenable number.

2202605 is a deficient number, since it is larger than the sum of its proper divisors (596107).

2202605 is a wasteful number, since it uses less digits than its factorization.

2202605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25935.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2202605 is about 1484.1175829428. The cubic root of 2202605 is about 130.1104583874.

Adding to 2202605 its reverse (5062022), we get a palindrome (7264627).

The spelling of 2202605 in words is "two million, two hundred two thousand, six hundred five".