65505855 has 8 divisors (see below), whose sum is σ = 104809392. Its totient is φ = 34936448.

The previous prime is 65505779. The next prime is 65505889. The reversal of 65505855 is 55850556.

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

It is a cyclic number.

It is not a de Polignac number, because 65505855 - 2¹⁷ = 65374783 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2183514 + ... + 2183543.

It is an arithmetic number, because the mean of its divisors is an integer number (13101174).

Almost surely, 2^65505855 is an apocalyptic number.

65505855 is a deficient number, since it is larger than the sum of its proper divisors (39303537).

65505855 is a wasteful number, since it uses less digits than its factorization.

65505855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4367065.

The product of its (nonzero) digits is 150000, while the sum is 39.

The square root of 65505855 is about 8093.5687431442. The cubic root of 65505855 is about 403.1129095587.

The spelling of 65505855 in words is "sixty-five million, five hundred five thousand, eight hundred fifty-five".