630872 has 32 divisors (see below), whose sum is σ = 1321920. Its totient is φ = 279840.

The previous prime is 630871. The next prime is 630893. The reversal of 630872 is 278036.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5843 + ... + 5949.

It is an arithmetic number, because the mean of its divisors is an integer number (41310).

2⁶³⁰⁸⁷² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (660960).

630872 is an abundant number, since it is smaller than the sum of its proper divisors (691048).

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

630872 is a wasteful number, since it uses less digits than its factorization.

630872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 630872 is about 794.2745117401. The cubic root of 630872 is about 85.7657225659.

Subtracting from 630872 its reverse (278036), we obtain a square (352836 = 594²).

The spelling of 630872 in words is "six hundred thirty thousand, eight hundred seventy-two".