6426663 has 8 divisors (see below), whose sum is σ = 9073008. Its totient is φ = 4032384.

The previous prime is 6426659. The next prime is 6426689. The reversal of 6426663 is 3666246.

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

It is not a de Polignac number, because 6426663 - 2² = 6426659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6426613) 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, 62956 + ... + 63057.

It is an arithmetic number, because the mean of its divisors is an integer number (1134126).

Almost surely, 2^6426663 is an apocalyptic number.

6426663 is a deficient number, since it is larger than the sum of its proper divisors (2646345).

6426663 is a wasteful number, since it uses less digits than its factorization.

6426663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126033.

The product of its digits is 31104, while the sum is 33.

The square root of 6426663 is about 2535.0863890605. The cubic root of 6426663 is about 185.9210267118.

The spelling of 6426663 in words is "six million, four hundred twenty-six thousand, six hundred sixty-three".