2665659 has 8 divisors (see below), whose sum is σ = 3668992. Its totient is φ = 1719720.

The previous prime is 2665627. The next prime is 2665667. The reversal of 2665659 is 9565662.

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

It is not a de Polignac number, because 2665659 - 2⁵ = 2665627 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 6⁵ + 6⁷ + 5 + 6⁷ + 5³ + 9³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2665669) 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, 14239 + ... + 14424.

It is an arithmetic number, because the mean of its divisors is an integer number (458624).

2^2665659 is an apocalyptic number.

2665659 is a deficient number, since it is larger than the sum of its proper divisors (1003333).

2665659 is a wasteful number, since it uses less digits than its factorization.

2665659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28697.

The product of its digits is 97200, while the sum is 39.

The square root of 2665659 is about 1632.6845990576. The cubic root of 2665659 is about 138.6547857435.

The spelling of 2665659 in words is "two million, six hundred sixty-five thousand, six hundred fifty-nine".