63135565 has 8 divisors (see below), whose sum is σ = 75874968. Its totient is φ = 50433600.

The previous prime is 63135563. The next prime is 63135593. The reversal of 63135565 is 56553136.

It can be written as a sum of positive squares in 4 ways, for example, as 31393609 + 31741956 = 5603^2 + 5634^2 .

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

It is not a de Polignac number, because 63135565 - 2¹ = 63135563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63135565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63135563) 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, 5502 + ... + 12511.

It is an arithmetic number, because the mean of its divisors is an integer number (9484371).

Almost surely, 2^63135565 is an apocalyptic number.

It is an amenable number.

63135565 is a deficient number, since it is larger than the sum of its proper divisors (12739403).

63135565 is a wasteful number, since it uses less digits than its factorization.

63135565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18719.

The product of its digits is 40500, while the sum is 34.

The square root of 63135565 is about 7945.7891363917. The cubic root of 63135565 is about 398.1909241966.

The spelling of 63135565 in words is "sixty-three million, one hundred thirty-five thousand, five hundred sixty-five".