65563365 has 32 divisors (see below), whose sum is σ = 120637440. Its totient is φ = 29784384.

The previous prime is 65563361. The next prime is 65563457. The reversal of 65563365 is 56336556.

It is not a de Polignac number, because 65563365 - 2² = 65563361 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65563361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15666 + ... + 19404.

It is an arithmetic number, because the mean of its divisors is an integer number (3769920).

Almost surely, 2^65563365 is an apocalyptic number.

It is an amenable number.

65563365 is a deficient number, since it is larger than the sum of its proper divisors (55074075).

65563365 is a wasteful number, since it uses less digits than its factorization.

65563365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3921.

The product of its digits is 243000, while the sum is 39.

The square root of 65563365 is about 8097.1207845752. The cubic root of 65563365 is about 403.2308442701.

The spelling of 65563365 in words is "sixty-five million, five hundred sixty-three thousand, three hundred sixty-five".