629990 has 16 divisors (see below), whose sum is σ = 1150848. Its totient is φ = 248256.

The previous prime is 629989. The next prime is 630017. The reversal of 629990 is 99926.

It is a self number, because there is not a number n which added to its sum of digits gives 629990.

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 7 ways as a sum of consecutive naturals, for example, 299 + ... + 1161.

It is an arithmetic number, because the mean of its divisors is an integer number (71928).

2⁶²⁹⁹⁹⁰ is an apocalyptic number.

629990 is a deficient number, since it is larger than the sum of its proper divisors (520858).

629990 is a wasteful number, since it uses less digits than its factorization.

629990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 629990 is about 793.7190938865. The cubic root of 629990 is about 85.7257352430.

The spelling of 629990 in words is "six hundred twenty-nine thousand, nine hundred ninety".