63765265 has 4 divisors (see below), whose sum is σ = 76518324. Its totient is φ = 51012208.

The previous prime is 63765241. The next prime is 63765271. The reversal of 63765265 is 56256736.

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 12054784 + 51710481 = 3472^2 + 7191^2 .

It is a cyclic number.

It is not a de Polignac number, because 63765265 - 2¹⁹ = 63240977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6376522 + ... + 6376531.

It is an arithmetic number, because the mean of its divisors is an integer number (19129581).

Almost surely, 2^63765265 is an apocalyptic number.

It is an amenable number.

63765265 is a deficient number, since it is larger than the sum of its proper divisors (12753059).

63765265 is a wasteful number, since it uses less digits than its factorization.

63765265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12753058.

The product of its digits is 226800, while the sum is 40.

The square root of 63765265 is about 7985.3155854982. The cubic root of 63765265 is about 399.5103696498.

The spelling of 63765265 in words is "sixty-three million, seven hundred sixty-five thousand, two hundred sixty-five".