2659885 has 4 divisors (see below), whose sum is σ = 3191868. Its totient is φ = 2127904.

The previous prime is 2659883. The next prime is 2659903. The reversal of 2659885 is 5889562.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1671849 + 988036 = 1293^2 + 994^2 .

It is a cyclic number.

It is not a de Polignac number, because 2659885 - 2¹ = 2659883 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 (2659883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265984 + ... + 265993.

It is an arithmetic number, because the mean of its divisors is an integer number (797967).

2^2659885 is an apocalyptic number.

It is an amenable number.

2659885 is a deficient number, since it is larger than the sum of its proper divisors (531983).

2659885 is an equidigital number, since it uses as much as digits as its factorization.

2659885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531982.

The product of its digits is 172800, while the sum is 43.

The square root of 2659885 is about 1630.9153871369. The cubic root of 2659885 is about 138.5546014519.

The spelling of 2659885 in words is "two million, six hundred fifty-nine thousand, eight hundred eighty-five".