2600989 has 4 divisors (see below), whose sum is σ = 2671324. Its totient is φ = 2530656.

The previous prime is 2600977. The next prime is 2601023. The reversal of 2600989 is 9890062.

2600989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2152089 + 448900 = 1467^2 + 670^2 .

It is a cyclic number.

It is not a de Polignac number, because 2600989 - 2⁵ = 2600957 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 (2600089) 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 3 ways as a sum of consecutive naturals, for example, 35112 + ... + 35185.

It is an arithmetic number, because the mean of its divisors is an integer number (667831).

2^2600989 is an apocalyptic number.

It is an amenable number.

2600989 is a deficient number, since it is larger than the sum of its proper divisors (70335).

2600989 is an equidigital number, since it uses as much as digits as its factorization.

2600989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70334.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 2600989 is about 1612.7581963828. The cubic root of 2600989 is about 137.5243196653.

The spelling of 2600989 in words is "two million, six hundred thousand, nine hundred eighty-nine".