6442867 has 4 divisors (see below), whose sum is σ = 6459336. Its totient is φ = 6426400.

The previous prime is 6442861. The next prime is 6442871. The reversal of 6442867 is 7682446.

6442867 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7682446 = 2 ⋅3841223.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6442867 is a prime.

It is a Duffinian number.

6442867 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6442861) 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 in 3 ways as a sum of consecutive naturals, for example, 7633 + ... + 8434.

It is an arithmetic number, because the mean of its divisors is an integer number (1614834).

Almost surely, 2^6442867 is an apocalyptic number.

6442867 is a deficient number, since it is larger than the sum of its proper divisors (16469).

6442867 is a wasteful number, since it uses less digits than its factorization.

6442867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16468.

The product of its digits is 64512, while the sum is 37.

The square root of 6442867 is about 2538.2803233686. The cubic root of 6442867 is about 186.0771541787.

The spelling of 6442867 in words is "six million, four hundred forty-two thousand, eight hundred sixty-seven".