Cookie Consent by
Search a number
8315 = 51663

8315 has 4 divisors (see below), whose sum is σ = 9984. Its totient is φ = 6648.

The previous prime is 8311. The next prime is 8317. The reversal of 8315 is 5138.

8315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 8315 - 22 = 8311 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 8293 and 8302.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 8315.

It is not an unprimeable number, because it can be changed into a prime (8311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827 + ... + 836.

It is an arithmetic number, because the mean of its divisors is an integer number (2496).

28315 is an apocalyptic number.

8315 is a deficient number, since it is larger than the sum of its proper divisors (1669).

8315 is a wasteful number, since it uses less digits than its factorization.

8315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668.

The product of its digits is 120, while the sum is 17.

The square root of 8315 is about 91.1866218258. The cubic root of 8315 is about 20.2591281308.

It can be divided in two parts, 8 and 315, that added together give a palindrome (323).

The spelling of 8315 in words is "eight thousand, three hundred fifteen".

Divisors: 1 5 1663 8315