6443011 has 2 divisors, whose sum is σ = 6443012. Its totient is φ = 6443010.

The previous prime is 6442999. The next prime is 6443081. The reversal of 6443011 is 1103446.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6443011 - 2⁵ = 6442979 is a prime.

It is a super-2 number, since 2×6443011² = 83024781492242, which contains 22 as substring.

6443011 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6443011.

It is not a weakly prime, because it can be changed into another prime (6443081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3221505 + 3221506.

It is an arithmetic number, because the mean of its divisors is an integer number (3221506).

Almost surely, 2^6443011 is an apocalyptic number.

6443011 is a deficient number, since it is larger than the sum of its proper divisors (1).

6443011 is an equidigital number, since it uses as much as digits as its factorization.

6443011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 6443011 is about 2538.3086888714. The cubic root of 6443011 is about 186.0785404617.

Adding to 6443011 its reverse (1103446), we get a palindrome (7546457).

It can be divided in two parts, 644 and 3011, that added together give a triangular number (3655 = T₈₅).

The spelling of 6443011 in words is "six million, four hundred forty-three thousand, eleven".