2665456 has 20 divisors (see below), whose sum is σ = 5250904. Its totient is φ = 1310400.

The previous prime is 2665433. The next prime is 2665459. The reversal of 2665456 is 6545662.

2665456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665459) 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 3 ways as a sum of consecutive naturals, for example, 390 + ... + 2341.

2^2665456 is an apocalyptic number.

It is an amenable number.

2665456 is a deficient number, since it is larger than the sum of its proper divisors (2585448).

2665456 is a wasteful number, since it uses less digits than its factorization.

2665456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800 (or 2794 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The square root of 2665456 is about 1632.6224303249. The cubic root of 2665456 is about 138.6512659589.

The spelling of 2665456 in words is "two million, six hundred sixty-five thousand, four hundred fifty-six".