629940 has 24 divisors (see below), whose sum is σ = 1764000. Its totient is φ = 167968.

The previous prime is 629939. The next prime is 629963. The reversal of 629940 is 49926.

629940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 629898 and 629907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5190 + ... + 5309.

It is an arithmetic number, because the mean of its divisors is an integer number (73500).

2⁶²⁹⁹⁴⁰ is an apocalyptic number.

629940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

629940 is an abundant number, since it is smaller than the sum of its proper divisors (1134060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

629940 is a wasteful number, since it uses less digits than its factorization.

629940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10511 (or 10509 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 629940 is about 793.6875959721. The cubic root of 629940 is about 85.7234672704.

The spelling of 629940 in words is "six hundred twenty-nine thousand, nine hundred forty".