816875 has 10 divisors (see below), whose sum is σ = 1021548. Its totient is φ = 653000.

The previous prime is 816869. The next prime is 816883. The reversal of 816875 is 578618.

It is a happy number.

It is not a de Polignac number, because 816875 - 2⁴ = 816859 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 29 + ... + 1278.

2⁸¹⁶⁸⁷⁵ is an apocalyptic number.

816875 is a deficient number, since it is larger than the sum of its proper divisors (204673).

816875 is an equidigital number, since it uses as much as digits as its factorization.

816875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327 (or 1312 counting only the distinct ones).

The product of its digits is 13440, while the sum is 35.

The square root of 816875 is about 903.8113741263. The cubic root of 816875 is about 93.4799636783.

The spelling of 816875 in words is "eight hundred sixteen thousand, eight hundred seventy-five".