630629 has 4 divisors (see below), whose sum is σ = 663840. Its totient is φ = 597420.

The previous prime is 630613. The next prime is 630659. The reversal of 630629 is 926036.

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 630629 - 2⁴ = 630613 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 630598 and 630607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630659) 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, 16577 + ... + 16614.

It is an arithmetic number, because the mean of its divisors is an integer number (165960).

2⁶³⁰⁶²⁹ is an apocalyptic number.

It is an amenable number.

630629 is a deficient number, since it is larger than the sum of its proper divisors (33211).

630629 is a wasteful number, since it uses less digits than its factorization.

630629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33210.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 630629 is about 794.1215272236. The cubic root of 630629 is about 85.7547093720.

The spelling of 630629 in words is "six hundred thirty thousand, six hundred twenty-nine".