665315063 has 4 divisors (see below), whose sum is σ = 760360080. Its totient is φ = 570270048.

The previous prime is 665315041. The next prime is 665315107. The reversal of 665315063 is 360513566.

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 665315063 - 2¹⁴ = 665298679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665315003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47522498 + ... + 47522511.

It is an arithmetic number, because the mean of its divisors is an integer number (190090020).

Almost surely, 2^665315063 is an apocalyptic number.

665315063 is a deficient number, since it is larger than the sum of its proper divisors (95045017).

665315063 is an equidigital number, since it uses as much as digits as its factorization.

665315063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95045016.

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 665315063 is about 25793.7020026207. The cubic root of 665315063 is about 872.9896980354.

The spelling of 665315063 in words is "six hundred sixty-five million, three hundred fifteen thousand, sixty-three".