2668648 has 8 divisors (see below), whose sum is σ = 5003730. Its totient is φ = 1334320.

The previous prime is 2668639. The next prime is 2668663. The reversal of 2668648 is 8468662.

It can be written as a sum of positive squares in only one way, i.e., 1855044 + 813604 = 1362^2 + 902^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2668648.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166783 + ... + 166798.

2^2668648 is an apocalyptic number.

It is an amenable number.

2668648 is a deficient number, since it is larger than the sum of its proper divisors (2335082).

2668648 is a wasteful number, since it uses less digits than its factorization.

2668648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333587 (or 333583 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 2668648 is about 1633.5997061704. The cubic root of 2668648 is about 138.7065908628.

The spelling of 2668648 in words is "two million, six hundred sixty-eight thousand, six hundred forty-eight".