629789 has 4 divisors (see below), whose sum is σ = 634524. Its totient is φ = 625056.

The previous prime is 629779. The next prime is 629803. The reversal of 629789 is 987926.

629789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 184900 + 444889 = 430^2 + 667^2 .

It is a cyclic number.

It is not a de Polignac number, because 629789 - 2⁴ = 629773 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 (629779) 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, 2162 + ... + 2435.

It is an arithmetic number, because the mean of its divisors is an integer number (158631).

2⁶²⁹⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

629789 is a deficient number, since it is larger than the sum of its proper divisors (4735).

629789 is a wasteful number, since it uses less digits than its factorization.

629789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4734.

The product of its digits is 54432, while the sum is 41.

The square root of 629789 is about 793.5924646820. The cubic root of 629789 is about 85.7166172646.

The spelling of 629789 in words is "six hundred twenty-nine thousand, seven hundred eighty-nine".