655606065 has 16 divisors (see below), whose sum is σ = 1063340928. Its totient is φ = 344866176.

The previous prime is 655606051. The next prime is 655606117. The reversal of 655606065 is 560606556.

It is a happy number.

It is not a de Polignac number, because 655606065 - 2⁸ = 655605809 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298269 + ... + 300458.

It is an arithmetic number, because the mean of its divisors is an integer number (66458808).

Almost surely, 2^655606065 is an apocalyptic number.

It is an amenable number.

655606065 is a deficient number, since it is larger than the sum of its proper divisors (407734863).

655606065 is a wasteful number, since it uses less digits than its factorization.

655606065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598808.

The product of its (nonzero) digits is 162000, while the sum is 39.

The square root of 655606065 is about 25604.8055059983. The cubic root of 655606065 is about 868.7223351610.

The spelling of 655606065 in words is "six hundred fifty-five million, six hundred six thousand, sixty-five".