2646043 has 4 divisors (see below), whose sum is σ = 2656368. Its totient is φ = 2635720.

The previous prime is 2646041. The next prime is 2646071. The reversal of 2646043 is 3406462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3406462 = 2 ⋅1703231.

It is a cyclic number.

It is not a de Polignac number, because 2646043 - 2¹ = 2646041 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 6 + 4⁵ + 6² + 0 + 4⁷ + 3¹² .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2645999 and 2646017.

It is not an unprimeable number, because it can be changed into a prime (2646041) 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, 4768 + ... + 5293.

It is an arithmetic number, because the mean of its divisors is an integer number (664092).

2^2646043 is an apocalyptic number.

2646043 is a deficient number, since it is larger than the sum of its proper divisors (10325).

2646043 is a wasteful number, since it uses less digits than its factorization.

2646043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10324.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 2646043 is about 1626.6662226775. Note that the first 3 decimals coincide. The cubic root of 2646043 is about 138.3138379972.

The spelling of 2646043 in words is "two million, six hundred forty-six thousand, forty-three".