816954 has 16 divisors (see below), whose sum is σ = 1669248. Its totient is φ = 266432.

The previous prime is 816947. The next prime is 816961. The reversal of 816954 is 459618.

It is an interprime number because it is at equal distance from previous prime (816947) and next prime (816961).

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 816954.

It is an unprimeable number.

816954 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, 1167 + ... + 1730.

It is an arithmetic number, because the mean of its divisors is an integer number (104328).

2⁸¹⁶⁹⁵⁴ is an apocalyptic number.

816954 is an abundant number, since it is smaller than the sum of its proper divisors (852294).

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

816954 is a wasteful number, since it uses less digits than its factorization.

816954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2949.

The product of its digits is 8640, while the sum is 33.

The square root of 816954 is about 903.8550768790. The cubic root of 816954 is about 93.4829770643.

It can be divided in two parts, 816 and 954, that added together give a triangular number (1770 = T₅₉).

The spelling of 816954 in words is "eight hundred sixteen thousand, nine hundred fifty-four".