6426563 has 12 divisors (see below), whose sum is σ = 7593768. Its totient is φ = 5391360.

The previous prime is 6426559. The next prime is 6426569. The reversal of 6426563 is 3656246.

It is not a de Polignac number, because 6426563 - 2² = 6426559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6426569) 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, 131 + ... + 3587.

It is an arithmetic number, because the mean of its divisors is an integer number (632814).

Almost surely, 2^6426563 is an apocalyptic number.

6426563 is a deficient number, since it is larger than the sum of its proper divisors (1167205).

6426563 is a wasteful number, since it uses less digits than its factorization.

6426563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494 (or 3481 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 6426563 is about 2535.0666657901. The cubic root of 6426563 is about 185.9200623856.

The spelling of 6426563 in words is "six million, four hundred twenty-six thousand, five hundred sixty-three".