6442563 has 8 divisors (see below), whose sum is σ = 8612176. Its totient is φ = 4284000.

The previous prime is 6442559. The next prime is 6442567. The reversal of 6442563 is 3652446.

It is an interprime number because it is at equal distance from previous prime (6442559) and next prime (6442567).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6442563 - 2² = 6442559 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 6442563.

It is not an unprimeable number, because it can be changed into a prime (6442567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1288 + ... + 3813.

It is an arithmetic number, because the mean of its divisors is an integer number (1076522).

Almost surely, 2^6442563 is an apocalyptic number.

6442563 is a deficient number, since it is larger than the sum of its proper divisors (2169613).

6442563 is a wasteful number, since it uses less digits than its factorization.

6442563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5525.

The product of its digits is 17280, while the sum is 30.

The square root of 6442563 is about 2538.2204395994. The cubic root of 6442563 is about 186.0742275134.

The spelling of 6442563 in words is "six million, four hundred forty-two thousand, five hundred sixty-three".