916513 has 4 divisors (see below), whose sum is σ = 987028. Its totient is φ = 846000.

The previous prime is 916511. The next prime is 916537. The reversal of 916513 is 315619.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315619 = 547 ⋅577.

It can be written as a sum of positive squares in 2 ways, for example, as 380689 + 535824 = 617^2 + 732^2 .

It is a cyclic number.

It is not a de Polignac number, because 916513 - 2¹ = 916511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (916511) 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 3 ways as a sum of consecutive naturals, for example, 35238 + ... + 35263.

It is an arithmetic number, because the mean of its divisors is an integer number (246757).

2⁹¹⁶⁵¹³ is an apocalyptic number.

It is an amenable number.

916513 is a deficient number, since it is larger than the sum of its proper divisors (70515).

916513 is a wasteful number, since it uses less digits than its factorization.

916513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70514.

The product of its digits is 810, while the sum is 25.

The square root of 916513 is about 957.3468545935. The cubic root of 916513 is about 97.1358496140.

The spelling of 916513 in words is "nine hundred sixteen thousand, five hundred thirteen".