2689321 has 4 divisors (see below), whose sum is σ = 2806272. Its totient is φ = 2572372.

The previous prime is 2689303. The next prime is 2689333. The reversal of 2689321 is 1239862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2689321 - 2⁵ = 2689289 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689361) 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, 58441 + ... + 58486.

It is an arithmetic number, because the mean of its divisors is an integer number (701568).

2^2689321 is an apocalyptic number.

It is an amenable number.

2689321 is a deficient number, since it is larger than the sum of its proper divisors (116951).

2689321 is a wasteful number, since it uses less digits than its factorization.

2689321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116950.

The product of its digits is 5184, while the sum is 31.

The square root of 2689321 is about 1639.9149368184. The cubic root of 2689321 is about 139.0638390057.

The spelling of 2689321 in words is "two million, six hundred eighty-nine thousand, three hundred twenty-one".