630870 has 32 divisors (see below), whose sum is σ = 1604448. Its totient is φ = 158208.

The previous prime is 630863. The next prime is 630871. The reversal of 630870 is 78036.

It is a self number, because there is not a number n which added to its sum of digits gives 630870.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109 + ... + 1128.

It is an arithmetic number, because the mean of its divisors is an integer number (50139).

2⁶³⁰⁸⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (802224).

630870 is an abundant number, since it is smaller than the sum of its proper divisors (973578).

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

630870 is a wasteful number, since it uses less digits than its factorization.

630870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 630870 is about 794.2732527286. The cubic root of 630870 is about 85.7656319339.

It can be divided in two parts, 6 and 30870, that added together give a triangular number (30876 = T₂₄₈).

The spelling of 630870 in words is "six hundred thirty thousand, eight hundred seventy".