2605648 has 10 divisors (see below), whose sum is σ = 5048474. Its totient is φ = 1302816.

The previous prime is 2605637. The next prime is 2605661. The reversal of 2605648 is 8465062.

It can be written as a sum of positive squares in only one way, i.e., 1817104 + 788544 = 1348^2 + 888^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81411 + ... + 81442.

2^2605648 is an apocalyptic number.

It is an amenable number.

2605648 is a deficient number, since it is larger than the sum of its proper divisors (2442826).

2605648 is a wasteful number, since it uses less digits than its factorization.

2605648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162861 (or 162855 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 2605648 is about 1614.2019700149. The cubic root of 2605648 is about 137.6063837853.

The spelling of 2605648 in words is "two million, six hundred five thousand, six hundred forty-eight".