618156 has 72 divisors (see below), whose sum is σ = 1956864. Its totient is φ = 159840.

The previous prime is 618131. The next prime is 618161. The reversal of 618156 is 651816.

It is an unprimeable number.

618156 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, 2661 + ... + 2883.

2⁶¹⁸¹⁵⁶ is an apocalyptic number.

618156 is a gapful number since it is divisible by the number (66) 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 618156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (978432).

618156 is an abundant number, since it is smaller than the sum of its proper divisors (1338708).

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

618156 is a wasteful number, since it uses less digits than its factorization.

618156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 246 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 618156 is about 786.2289742817. The cubic root of 618156 is about 85.1855692018.

The spelling of 618156 in words is "six hundred eighteen thousand, one hundred fifty-six".