2568989 has 8 divisors (see below), whose sum is σ = 2734200. Its totient is φ = 2405376.

The previous prime is 2568983. The next prime is 2568997. The reversal of 2568989 is 9898652.

It can be written as a sum of positive squares in 4 ways, for example, as 466489 + 2102500 = 683^2 + 1450^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2568989 - 2¹⁶ = 2503453 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 (2568983) 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, 5717 + ... + 6149.

It is an arithmetic number, because the mean of its divisors is an integer number (341775).

2^2568989 is an apocalyptic number.

It is an amenable number.

2568989 is a deficient number, since it is larger than the sum of its proper divisors (165211).

2568989 is a wasteful number, since it uses less digits than its factorization.

2568989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799.

The product of its digits is 311040, while the sum is 47.

The square root of 2568989 is about 1602.8066009347. The cubic root of 2568989 is about 136.9580030045.

The spelling of 2568989 in words is "two million, five hundred sixty-eight thousand, nine hundred eighty-nine".