618630 has 32 divisors (see below), whose sum is σ = 1573344. Its totient is φ = 155136.

The previous prime is 618619. The next prime is 618637. The reversal of 618630 is 36816.

It is a self number, because there is not a number n which added to its sum of digits gives 618630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618637) by changing a digit.

618630 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97 + ... + 1116.

It is an arithmetic number, because the mean of its divisors is an integer number (49167).

2⁶¹⁸⁶³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (786672).

618630 is an abundant number, since it is smaller than the sum of its proper divisors (954714).

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

618630 is a wasteful number, since it uses less digits than its factorization.

618630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 618630 is about 786.5303554218. The cubic root of 618630 is about 85.2073369775.

It can be divided in two parts, 6186 and 30, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 618630 in words is "six hundred eighteen thousand, six hundred thirty".