2643406 has 8 divisors (see below), whose sum is σ = 3991824. Its totient is φ = 1312800.

The previous prime is 2643397. The next prime is 2643427. The reversal of 2643406 is 6043462.

2643406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

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, 4075 + ... + 4678.

It is an arithmetic number, because the mean of its divisors is an integer number (498978).

2^2643406 is an apocalyptic number.

2643406 is a deficient number, since it is larger than the sum of its proper divisors (1348418).

2643406 is a wasteful number, since it uses less digits than its factorization.

2643406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8906.

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

The square root of 2643406 is about 1625.8554671311. The cubic root of 2643406 is about 138.2678756778.

Adding to 2643406 its reverse (6043462), we get a palindrome (8686868).

The spelling of 2643406 in words is "two million, six hundred forty-three thousand, four hundred six".