6456445 has 12 divisors (see below), whose sum is σ = 8102556. Its totient is φ = 4938560.

The previous prime is 6456427. The next prime is 6456449. The reversal of 6456445 is 5446546.

It can be written as a sum of positive squares in 2 ways, for example, as 1375929 + 5080516 = 1173^2 + 2254^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6456445 is a prime.

It is a Duffinian number.

6456445 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6456445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6456449) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1425 + ... + 3865.

It is an arithmetic number, because the mean of its divisors is an integer number (675213).

Almost surely, 2^6456445 is an apocalyptic number.

It is an amenable number.

6456445 is a deficient number, since it is larger than the sum of its proper divisors (1646111).

6456445 is a wasteful number, since it uses less digits than its factorization.

6456445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2492 (or 2469 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

The square root of 6456445 is about 2540.9535611656. The cubic root of 6456445 is about 186.2077783668.

The spelling of 6456445 in words is "six million, four hundred fifty-six thousand, four hundred forty-five".