6443485 has 4 divisors (see below), whose sum is σ = 7732188. Its totient is φ = 5154784.

The previous prime is 6443483. The next prime is 6443501. The reversal of 6443485 is 5843446.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 736164 + 5707321 = 858^2 + 2389^2 .

It is a cyclic number.

It is not a de Polignac number, because 6443485 - 2¹ = 6443483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6443485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6443483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644344 + ... + 644353.

It is an arithmetic number, because the mean of its divisors is an integer number (1933047).

Almost surely, 2^6443485 is an apocalyptic number.

It is an amenable number.

6443485 is a deficient number, since it is larger than the sum of its proper divisors (1288703).

6443485 is a wasteful number, since it uses less digits than its factorization.

6443485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288702.

The product of its digits is 46080, while the sum is 34.

The square root of 6443485 is about 2538.4020564127. The cubic root of 6443485 is about 186.0831034972.

The spelling of 6443485 in words is "six million, four hundred forty-three thousand, four hundred eighty-five".