2664389 has 32 divisors (see below), whose sum is σ = 3655680. Its totient is φ = 1881792.

The previous prime is 2664379. The next prime is 2664397. The reversal of 2664389 is 9834662.

2664389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2664389 is a prime.

2664389 is a modest number, since divided by 4389 gives 266 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664329) 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 31 ways as a sum of consecutive naturals, for example, 39734 + ... + 39800.

It is an arithmetic number, because the mean of its divisors is an integer number (114240).

2^2664389 is an apocalyptic number.

It is an amenable number.

2664389 is a deficient number, since it is larger than the sum of its proper divisors (991291).

2664389 is a wasteful number, since it uses less digits than its factorization.

2664389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129.

The product of its digits is 62208, while the sum is 38.

The square root of 2664389 is about 1632.2956227350. The cubic root of 2664389 is about 138.6327624776.

The spelling of 2664389 in words is "two million, six hundred sixty-four thousand, three hundred eighty-nine".