2664321 has 8 divisors (see below), whose sum is σ = 3875424. Its totient is φ = 1614720.

The previous prime is 2664307. The next prime is 2664329. The reversal of 2664321 is 1234662.

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

It is not a de Polignac number, because 2664321 - 2¹⁵ = 2631553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2664291 and 2664300.

It is not an unprimeable number, because it can be changed into a prime (2664329) 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, 40336 + ... + 40401.

It is an arithmetic number, because the mean of its divisors is an integer number (484428).

2^2664321 is an apocalyptic number.

It is an amenable number.

2664321 is a deficient number, since it is larger than the sum of its proper divisors (1211103).

2664321 is a wasteful number, since it uses less digits than its factorization.

2664321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80751.

The product of its digits is 1728, while the sum is 24.

The square root of 2664321 is about 1632.2747930419. The cubic root of 2664321 is about 138.6315830818.

Adding to 2664321 its reverse (1234662), we get a palindrome (3898983).

The spelling of 2664321 in words is "two million, six hundred sixty-four thousand, three hundred twenty-one".