6444731 has 2 divisors, whose sum is σ = 6444732. Its totient is φ = 6444730.

The previous prime is 6444727. The next prime is 6444733. The reversal of 6444731 is 1374446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6444731 - 2² = 6444727 is a prime.

It is a super-2 number, since 2×6444731² = 83069115324722, which contains 22 as substring.

Together with 6444733, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6444694 and 6444703.

It is not a weakly prime, because it can be changed into another prime (6444733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222365 + 3222366.

It is an arithmetic number, because the mean of its divisors is an integer number (3222366).

Almost surely, 2^6444731 is an apocalyptic number.

6444731 is a deficient number, since it is larger than the sum of its proper divisors (1).

6444731 is an equidigital number, since it uses as much as digits as its factorization.

6444731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 29.

The square root of 6444731 is about 2538.6474745423. The cubic root of 6444731 is about 186.0950972451.

The spelling of 6444731 in words is "six million, four hundred forty-four thousand, seven hundred thirty-one".