2150689 has 2 divisors, whose sum is σ = 2150690. Its totient is φ = 2150688.

The previous prime is 2150683. The next prime is 2150713. The reversal of 2150689 is 9860512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1537600 + 613089 = 1240^2 + 783^2 .

It is a cyclic number.

It is not a de Polignac number, because 2150689 - 2⁵ = 2150657 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2150689.

It is not a weakly prime, because it can be changed into another prime (2150683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075344 + 1075345.

It is an arithmetic number, because the mean of its divisors is an integer number (1075345).

2^2150689 is an apocalyptic number.

It is an amenable number.

2150689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2150689 is an equidigital number, since it uses as much as digits as its factorization.

2150689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 2150689 is about 1466.5227580914. The cubic root of 2150689 is about 129.0800736759.

The spelling of 2150689 in words is "two million, one hundred fifty thousand, six hundred eighty-nine".