513630 has 48 divisors (see below), whose sum is σ = 1441440. Its totient is φ = 126144.

The previous prime is 513593. The next prime is 513631. The reversal of 513630 is 36315.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513631) by changing a digit.

513630 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 (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 951 + ... + 1389.

It is an arithmetic number, because the mean of its divisors is an integer number (30030).

2⁵¹³⁶³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 513630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (720720).

513630 is an abundant number, since it is smaller than the sum of its proper divisors (927810).

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

513630 is a wasteful number, since it uses less digits than its factorization.

513630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 513630 is about 716.6798448401. The cubic root of 513630 is about 80.0848059011.

Adding to 513630 its reverse (36315), we get a palindrome (549945).

The spelling of 513630 in words is "five hundred thirteen thousand, six hundred thirty".