618522 has 8 divisors (see below), whose sum is σ = 1237056. Its totient is φ = 206172.

The previous prime is 618521. The next prime is 618547. The reversal of 618522 is 225816.

It is a sphenic number, since it is the product of 3 distinct primes.

618522 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 618492 and 618501.

It is not an unprimeable number, because it can be changed into a prime (618521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51538 + ... + 51549.

It is an arithmetic number, because the mean of its divisors is an integer number (154632).

2⁶¹⁸⁵²² is an apocalyptic number.

618522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

618522 is a wasteful number, since it uses less digits than its factorization.

618522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103092.

The product of its digits is 960, while the sum is 24.

The square root of 618522 is about 786.4616964608. The cubic root of 618522 is about 85.2023782095.

It can be divided in two parts, 6 and 18522, that added together give a triangular number (18528 = T₁₉₂).

The spelling of 618522 in words is "six hundred eighteen thousand, five hundred twenty-two".