916505 has 4 divisors (see below), whose sum is σ = 1099812. Its totient is φ = 733200.

The previous prime is 916501. The next prime is 916507. The reversal of 916505 is 505619.

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 425104 + 491401 = 652^2 + 701^2 .

It is not a de Polignac number, because 916505 - 2² = 916501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (916501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91646 + ... + 91655.

It is an arithmetic number, because the mean of its divisors is an integer number (274953).

2⁹¹⁶⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

916505 is a deficient number, since it is larger than the sum of its proper divisors (183307).

916505 is a wasteful number, since it uses less digits than its factorization.

916505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183306.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 916505 is about 957.3426763704. The cubic root of 916505 is about 97.1355669888.

The spelling of 916505 in words is "nine hundred sixteen thousand, five hundred five".