65763565 has 16 divisors (see below), whose sum is σ = 95496192. Its totient is φ = 42441984.

The previous prime is 65763563. The next prime is 65763571. The reversal of 65763565 is 56536756.

It is a cyclic number.

It is not a de Polignac number, because 65763565 - 2¹ = 65763563 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 (65763563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54669 + ... + 55858.

It is an arithmetic number, because the mean of its divisors is an integer number (5968512).

Almost surely, 2^65763565 is an apocalyptic number.

It is an amenable number.

65763565 is a deficient number, since it is larger than the sum of its proper divisors (29732627).

65763565 is a wasteful number, since it uses less digits than its factorization.

65763565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110556.

The product of its digits is 567000, while the sum is 43.

The square root of 65763565 is about 8109.4737807086. The cubic root of 65763565 is about 403.6408536646.

The spelling of 65763565 in words is "sixty-five million, seven hundred sixty-three thousand, five hundred sixty-five".