6442885 has 16 divisors (see below), whose sum is σ = 8059392. Its totient is φ = 4939200.

The previous prime is 6442883. The next prime is 6442897. The reversal of 6442885 is 5882446.

6442885 = T₁₃₄ + T₁₃₅ + ... + T₃₄₄.

6442885 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6442885 - 2¹ = 6442883 is a prime.

It is a Duffinian number.

6442885 is a lucky number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442883) 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 15 ways as a sum of consecutive naturals, for example, 30430 + ... + 30640.

It is an arithmetic number, because the mean of its divisors is an integer number (503712).

Almost surely, 2^6442885 is an apocalyptic number.

6442885 is the 2073-rd centered triangular number.

It is an amenable number.

6442885 is a deficient number, since it is larger than the sum of its proper divisors (1616507).

6442885 is a wasteful number, since it uses less digits than its factorization.

6442885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444.

The product of its digits is 61440, while the sum is 37.

The square root of 6442885 is about 2538.2838690737. The cubic root of 6442885 is about 186.0773274652.

The spelling of 6442885 in words is "six million, four hundred forty-two thousand, eight hundred eighty-five".