6629 has 4 divisors (see below), whose sum is σ = 7584. Its totient is φ = 5676.

The previous prime is 6619. The next prime is 6637. The reversal of 6629 is 9266.

6629 = 46² + 47² + 48².

6629 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6629 - 2⁸ = 6373 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467 + ... + 480.

It is an arithmetic number, because the mean of its divisors is an integer number (1896).

2⁶⁶²⁹ is an apocalyptic number.

It is an amenable number.

6629 is a deficient number, since it is larger than the sum of its proper divisors (955).

6629 is an equidigital number, since it uses as much as digits as its factorization.

6629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954.

The product of its digits is 648, while the sum is 23.

The square root of 6629 is about 81.4186710773. The cubic root of 6629 is about 18.7852079208.

The spelling of 6629 in words is "six thousand, six hundred twenty-nine".