655020065 has 32 divisors (see below), whose sum is σ = 938338560. Its totient is φ = 429560064.

The previous prime is 655020053. The next prime is 655020083. The reversal of 655020065 is 560020556.

It is a cyclic number.

It is not a de Polignac number, because 655020065 - 2¹² = 655015969 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72119 + ... + 80691.

It is an arithmetic number, because the mean of its divisors is an integer number (29323080).

Almost surely, 2^655020065 is an apocalyptic number.

It is an amenable number.

655020065 is a deficient number, since it is larger than the sum of its proper divisors (283318495).

655020065 is a wasteful number, since it uses less digits than its factorization.

655020065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8681.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 655020065 is about 25593.3597833501. The cubic root of 655020065 is about 868.4634281408.

The spelling of 655020065 in words is "six hundred fifty-five million, twenty thousand, sixty-five".