2646321 has 8 divisors (see below), whose sum is σ = 3536640. Its totient is φ = 1760112.

The previous prime is 2646269. The next prime is 2646353. The reversal of 2646321 is 1236462.

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

It is not a de Polignac number, because 2646321 - 2⁹ = 2645809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2646291 and 2646300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646361) 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, 1120 + ... + 2558.

It is an arithmetic number, because the mean of its divisors is an integer number (442080).

2^2646321 is an apocalyptic number.

It is an amenable number.

2646321 is a deficient number, since it is larger than the sum of its proper divisors (890319).

2646321 is a wasteful number, since it uses less digits than its factorization.

2646321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055.

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

The square root of 2646321 is about 1626.7516712762. The cubic root of 2646321 is about 138.3186816953.

The spelling of 2646321 in words is "two million, six hundred forty-six thousand, three hundred twenty-one".