816956 has 24 divisors (see below), whose sum is σ = 1653120. Its totient is φ = 346032.

The previous prime is 816947. The next prime is 816961. The reversal of 816956 is 659618.

It is a congruent number.

It is an unprimeable number.

816956 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4475 + ... + 4653.

It is an arithmetic number, because the mean of its divisors is an integer number (68880).

2⁸¹⁶⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

816956 is an abundant number, since it is smaller than the sum of its proper divisors (836164).

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

816956 is a wasteful number, since it uses less digits than its factorization.

816956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 351 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

The square root of 816956 is about 903.8561832504. The cubic root of 816956 is about 93.4830533500.

The spelling of 816956 in words is "eight hundred sixteen thousand, nine hundred fifty-six".