816963 has 8 divisors (see below), whose sum is σ = 1244928. Its totient is φ = 466824.

The previous prime is 816961. The next prime is 816971. The reversal of 816963 is 369618.

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

It is not a de Polignac number, because 816963 - 2¹ = 816961 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (816961) 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, 19431 + ... + 19472.

It is an arithmetic number, because the mean of its divisors is an integer number (155616).

2⁸¹⁶⁹⁶³ is an apocalyptic number.

816963 is a deficient number, since it is larger than the sum of its proper divisors (427965).

816963 is a wasteful number, since it uses less digits than its factorization.

816963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38913.

The product of its digits is 7776, while the sum is 33.

The square root of 816963 is about 903.8600555396. The cubic root of 816963 is about 93.4833203491.

The spelling of 816963 in words is "eight hundred sixteen thousand, nine hundred sixty-three".