629945 has 12 divisors (see below), whose sum is σ = 800100. Its totient is φ = 476064.

The previous prime is 629939. The next prime is 629963. The reversal of 629945 is 549926.

It can be written as a sum of positive squares in 2 ways, for example, as 346921 + 283024 = 589^2 + 532^2 .

It is not a de Polignac number, because 629945 - 2⁴ = 629929 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 1631 + ... + 1979.

It is an arithmetic number, because the mean of its divisors is an integer number (66675).

2⁶²⁹⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

629945 is a deficient number, since it is larger than the sum of its proper divisors (170155).

629945 is a wasteful number, since it uses less digits than its factorization.

629945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 373 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 629945 is about 793.6907458198. The cubic root of 629945 is about 85.7236940731.

The spelling of 629945 in words is "six hundred twenty-nine thousand, nine hundred forty-five".