6629863 has 4 divisors (see below), whose sum is σ = 6640848. Its totient is φ = 6618880.

The previous prime is 6629807. The next prime is 6629873. The reversal of 6629863 is 3689266.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6629863 - 2⁹ = 6629351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6629873) 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, 4531 + ... + 5812.

It is an arithmetic number, because the mean of its divisors is an integer number (1660212).

Almost surely, 2^6629863 is an apocalyptic number.

6629863 is a deficient number, since it is larger than the sum of its proper divisors (10985).

6629863 is a wasteful number, since it uses less digits than its factorization.

6629863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10984.

The product of its digits is 93312, while the sum is 40.

The square root of 6629863 is about 2574.8520345837. The cubic root of 6629863 is about 187.8602307298.

It can be divided in two parts, 66 and 29863, that added together give a square (29929 = 173²).

The spelling of 6629863 in words is "six million, six hundred twenty-nine thousand, eight hundred sixty-three".