630450 has 48 divisors (see below), whose sum is σ = 1740960. Its totient is φ = 167760.

The previous prime is 630433. The next prime is 630451. The reversal of 630450 is 54036.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (630451) by changing a digit.

630450 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1117 + ... + 1583.

It is an arithmetic number, because the mean of its divisors is an integer number (36270).

2⁶³⁰⁴⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870480).

630450 is an abundant number, since it is smaller than the sum of its proper divisors (1110510).

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

630450 is a wasteful number, since it uses less digits than its factorization.

630450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 477 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 630450 is about 794.0088160720. The cubic root of 630450 is about 85.7465949626.

Adding to 630450 its reverse (54036), we get a palindrome (684486).

The spelling of 630450 in words is "six hundred thirty thousand, four hundred fifty".