2665388 has 18 divisors (see below), whose sum is σ = 5127948. Its totient is φ = 1211320.

The previous prime is 2665387. The next prime is 2665391. The reversal of 2665388 is 8835662.

2665388 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2¹⁹ + 6² + 6⁵ + 5⁵ + 3⁵ + 8⁵ + 8⁷ .

It is not an unprimeable number, because it can be changed into a prime (2665387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2270 + ... + 3237.

It is an arithmetic number, because the mean of its divisors is an integer number (284886).

2^2665388 is an apocalyptic number.

It is an amenable number.

2665388 is a deficient number, since it is larger than the sum of its proper divisors (2462560).

2665388 is a wasteful number, since it uses less digits than its factorization.

2665388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5533 (or 5520 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 2665388 is about 1632.6016048014. The cubic root of 2665388 is about 138.6500868778.

The spelling of 2665388 in words is "two million, six hundred sixty-five thousand, three hundred eighty-eight".