6318145 has 4 divisors (see below), whose sum is σ = 7581780. Its totient is φ = 5054512.

The previous prime is 6318139. The next prime is 6318149. The reversal of 6318145 is 5418136.

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 4822416 + 1495729 = 2196^2 + 1223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6318145 is a prime.

6318145 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6318149) 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, 631810 + ... + 631819.

It is an arithmetic number, because the mean of its divisors is an integer number (1895445).

Almost surely, 2^6318145 is an apocalyptic number.

It is an amenable number.

6318145 is a deficient number, since it is larger than the sum of its proper divisors (1263635).

6318145 is a wasteful number, since it uses less digits than its factorization.

6318145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263634.

The product of its digits is 2880, while the sum is 28.

The square root of 6318145 is about 2513.5920512287. The cubic root of 6318145 is about 184.8686186743.

Subtracting from 6318145 its reverse (5418136), we obtain a palindrome (900009).

The spelling of 6318145 in words is "six million, three hundred eighteen thousand, one hundred forty-five".