816318 has 20 divisors (see below), whose sum is σ = 1829520. Its totient is φ = 272052.

The previous prime is 816317. The next prime is 816329. The reversal of 816318 is 813618.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 816291 and 816300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816317) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2358 + ... + 2681.

It is an arithmetic number, because the mean of its divisors is an integer number (91476).

2⁸¹⁶³¹⁸ is an apocalyptic number.

816318 is an abundant number, since it is smaller than the sum of its proper divisors (1013202).

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

816318 is a wasteful number, since it uses less digits than its factorization.

816318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053 (or 5044 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 816318 is about 903.5031820641. The cubic root of 816318 is about 93.4587118838.

The spelling of 816318 in words is "eight hundred sixteen thousand, three hundred eighteen".