916885 has 4 divisors (see below), whose sum is σ = 1100268. Its totient is φ = 733504.

The previous prime is 916879. The next prime is 916907. The reversal of 916885 is 588619.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117649 + 799236 = 343^2 + 894^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-916885 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91684 + ... + 91693.

It is an arithmetic number, because the mean of its divisors is an integer number (275067).

2⁹¹⁶⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

916885 is a deficient number, since it is larger than the sum of its proper divisors (183383).

916885 is a wasteful number, since it uses less digits than its factorization.

916885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183382.

The product of its digits is 17280, while the sum is 37.

The square root of 916885 is about 957.5411218324. The cubic root of 916885 is about 97.1489898707.

The spelling of 916885 in words is "nine hundred sixteen thousand, eight hundred eighty-five".