618020 has 24 divisors (see below), whose sum is σ = 1398264. Its totient is φ = 228096.

The previous prime is 617983. The next prime is 618029. The reversal of 618020 is 20816.

618020 = T₂₅ + T₂₆ + ... + T₁₅₄.

It can be written as a sum of positive squares in 4 ways, for example, as 3364 + 614656 = 58^2 + 784^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 618020.

It is not an unprimeable number, because it can be changed into a prime (618029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929 + ... + 1448.

It is an arithmetic number, because the mean of its divisors is an integer number (58261).

2⁶¹⁸⁰²⁰ is an apocalyptic number.

It is an amenable number.

618020 is an abundant number, since it is smaller than the sum of its proper divisors (780244).

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

618020 is a wasteful number, since it uses less digits than its factorization.

618020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2399 (or 2397 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 618020 is about 786.1424807247. The cubic root of 618020 is about 85.1793215409.

Adding to 618020 its reverse (20816), we get a palindrome (638836).

The spelling of 618020 in words is "six hundred eighteen thousand, twenty".