65605255 has 16 divisors (see below), whose sum is σ = 82391904. Its totient is φ = 50094720.

The previous prime is 65605237. The next prime is 65605259. The reversal of 65605255 is 55250656.

It is a happy number.

It is not a de Polignac number, because 65605255 - 2²¹ = 63508103 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 65605255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65605259) 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, 6460 + ... + 13150.

It is an arithmetic number, because the mean of its divisors is an integer number (5149494).

Almost surely, 2^65605255 is an apocalyptic number.

65605255 is a deficient number, since it is larger than the sum of its proper divisors (16786649).

65605255 is a wasteful number, since it uses less digits than its factorization.

65605255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6786.

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 65605255 is about 8099.7070934695. The cubic root of 65605255 is about 403.3167039262.

The spelling of 65605255 in words is "sixty-five million, six hundred five thousand, two hundred fifty-five".