2665389 has 8 divisors (see below), whose sum is σ = 3577120. Its totient is φ = 1765296.

The previous prime is 2665387. The next prime is 2665391. The reversal of 2665389 is 9835662.

It is an interprime number because it is at equal distance from previous prime (2665387) and next prime (2665391).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2665389 - 2¹ = 2665387 is a prime.

It is a Duffinian number.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2359 + ... + 3300.

It is an arithmetic number, because the mean of its divisors is an integer number (447140).

2^2665389 is an apocalyptic number.

It is an amenable number.

2665389 is a deficient number, since it is larger than the sum of its proper divisors (911731).

2665389 is a wasteful number, since it uses less digits than its factorization.

2665389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819.

The product of its digits is 77760, while the sum is 39.

The square root of 2665389 is about 1632.6019110610. The cubic root of 2665389 is about 138.6501042174.

The spelling of 2665389 in words is "two million, six hundred sixty-five thousand, three hundred eighty-nine".