2072689 has 4 divisors (see below), whose sum is σ = 2101156. Its totient is φ = 2044224.

The previous prime is 2072687. The next prime is 2072699. The reversal of 2072689 is 9862702.

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 1703025 + 369664 = 1305^2 + 608^2 .

It is a cyclic number.

It is not a de Polignac number, because 2072689 - 2¹ = 2072687 is a prime.

It is a Duffinian number.

2072689 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2072683) 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, 14124 + ... + 14269.

It is an arithmetic number, because the mean of its divisors is an integer number (525289).

2^2072689 is an apocalyptic number.

It is an amenable number.

2072689 is a deficient number, since it is larger than the sum of its proper divisors (28467).

2072689 is an equidigital number, since it uses as much as digits as its factorization.

2072689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28466.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 2072689 is about 1439.6836458056. The cubic root of 2072689 is about 127.5003511460.

The spelling of 2072689 in words is "two million, seventy-two thousand, six hundred eighty-nine".