630729 has 24 divisors (see below), whose sum is σ = 1040832. Its totient is φ = 364320.

The previous prime is 630719. The next prime is 630733. The reversal of 630729 is 927036.

630729 is a `hidden beast` number, since 630 + 7 + 29 = 666.

630729 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 630729 - 2⁴ = 630713 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 3¹⁰ + 7 + 0 + 2¹⁹ + 9³ .

It is an alternating number because its digits alternate between even and odd.

630729 is strictly pandigital in base 7.

It is a Curzon number.

630729 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630709) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2139 + ... + 2415.

It is an arithmetic number, because the mean of its divisors is an integer number (43368).

2⁶³⁰⁷²⁹ is an apocalyptic number.

630729 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

630729 is a deficient number, since it is larger than the sum of its proper divisors (410103).

630729 is a wasteful number, since it uses less digits than its factorization.

630729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 630729 is about 794.1844873831. The cubic root of 630729 is about 85.7592418931.

It can be divided in two parts, 6307 and 29, that added together give a palindrome (6336).

The spelling of 630729 in words is "six hundred thirty thousand, seven hundred twenty-nine".