816235 has 8 divisors (see below), whose sum is σ = 1119456. Its totient is φ = 559680.

The previous prime is 816227. The next prime is 816239. The reversal of 816235 is 532618.

It is a happy number.

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

It is not a de Polignac number, because 816235 - 2³ = 816227 is a prime.

It is a super-3 number, since 3×816235³ = 1631424179051333625, which contains 333 as substring.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 11626 + ... + 11695.

It is an arithmetic number, because the mean of its divisors is an integer number (139932).

2⁸¹⁶²³⁵ is an apocalyptic number.

816235 is a deficient number, since it is larger than the sum of its proper divisors (303221).

816235 is a wasteful number, since it uses less digits than its factorization.

816235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23333.

The product of its digits is 1440, while the sum is 25.

The square root of 816235 is about 903.4572485735. The cubic root of 816235 is about 93.4555442719.

The spelling of 816235 in words is "eight hundred sixteen thousand, two hundred thirty-five".