816237 has 12 divisors (see below), whose sum is σ = 1223040. Its totient is φ = 543996.

The previous prime is 816227. The next prime is 816239. The reversal of 816237 is 732618.

It is not a de Polignac number, because 816237 - 2¹⁴ = 799853 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 816237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816239) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1437 + ... + 1922.

It is an arithmetic number, because the mean of its divisors is an integer number (101920).

2⁸¹⁶²³⁷ is an apocalyptic number.

It is an amenable number.

816237 is a deficient number, since it is larger than the sum of its proper divisors (406803).

816237 is an equidigital number, since it uses as much as digits as its factorization.

816237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374 (or 3362 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 816237 is about 903.4583554321. The cubic root of 816237 is about 93.4556206024.

The spelling of 816237 in words is "eight hundred sixteen thousand, two hundred thirty-seven".