618420 has 48 divisors (see below), whose sum is σ = 1891008. Its totient is φ = 149760.

The previous prime is 618413. The next prime is 618421. The reversal of 618420 is 24816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618421) 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, 192 + ... + 1128.

It is an arithmetic number, because the mean of its divisors is an integer number (39396).

2⁶¹⁸⁴²⁰ is an apocalyptic number.

618420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (945504).

618420 is an abundant number, since it is smaller than the sum of its proper divisors (1272588).

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

618420 is a wasteful number, since it uses less digits than its factorization.

618420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 618420 is about 786.3968463823. The cubic root of 618420 is about 85.1976943986.

It can be divided in two parts, 618 and 420, that multiplied together give a triangular number (259560 = T₇₂₀).

The spelling of 618420 in words is "six hundred eighteen thousand, four hundred twenty".