6315993 has 12 divisors (see below), whose sum is σ = 9659988. Its totient is φ = 3962880.

The previous prime is 6315989. The next prime is 6316003. The reversal of 6315993 is 3995136.

6315993 is a `hidden beast` number, since 63 + 1 + 599 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3873024 + 2442969 = 1968^2 + 1563^2 .

It is not a de Polignac number, because 6315993 - 2² = 6315989 is a prime.

It is a Curzon number.

6315993 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6315943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20488 + ... + 20793.

It is an arithmetic number, because the mean of its divisors is an integer number (804999).

Almost surely, 2^6315993 is an apocalyptic number.

It is an amenable number.

6315993 is a deficient number, since it is larger than the sum of its proper divisors (3343995).

6315993 is a wasteful number, since it uses less digits than its factorization.

6315993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41304 (or 41301 counting only the distinct ones).

The product of its digits is 21870, while the sum is 36.

The square root of 6315993 is about 2513.1639421255. The cubic root of 6315993 is about 184.8476271520.

The spelling of 6315993 in words is "six million, three hundred fifteen thousand, nine hundred ninety-three".