6315985 has 8 divisors (see below), whose sum is σ = 8162280. Its totient is φ = 4664064.

The previous prime is 6315983. The next prime is 6315989. The reversal of 6315985 is 5895136.

It can be written as a sum of positive squares in 4 ways, for example, as 25921 + 6290064 = 161^2 + 2508^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6315985 - 2¹ = 6315983 is a prime.

6315985 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6315983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48520 + ... + 48649.

It is an arithmetic number, because the mean of its divisors is an integer number (1020285).

Almost surely, 2^6315985 is an apocalyptic number.

6315985 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6315985 is a deficient number, since it is larger than the sum of its proper divisors (1846295).

6315985 is a wasteful number, since it uses less digits than its factorization.

6315985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97187.

The product of its digits is 32400, while the sum is 37.

The square root of 6315985 is about 2513.1623505058. The cubic root of 6315985 is about 184.8475491077.

The spelling of 6315985 in words is "six million, three hundred fifteen thousand, nine hundred eighty-five".