2646443 has 2 divisors, whose sum is σ = 2646444. Its totient is φ = 2646442.

The previous prime is 2646409. The next prime is 2646463. The reversal of 2646443 is 3446462.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2646443 is a prime.

It is not a weakly prime, because it can be changed into another prime (2646463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1323221 + 1323222.

It is an arithmetic number, because the mean of its divisors is an integer number (1323222).

2^2646443 is an apocalyptic number.

2646443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2646443 is an equidigital number, since it uses as much as digits as its factorization.

2646443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 29.

The square root of 2646443 is about 1626.7891688845. The cubic root of 2646443 is about 138.3208072399.

The spelling of 2646443 in words is "two million, six hundred forty-six thousand, four hundred forty-three".