655055565 has 16 divisors (see below), whose sum is σ = 1073653056. Its totient is φ = 340841600.

The previous prime is 655055563. The next prime is 655055573. The reversal of 655055565 is 565550556.

It is not a de Polignac number, because 655055565 - 2¹ = 655055563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655055561) 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, 531951 + ... + 533180.

It is an arithmetic number, because the mean of its divisors is an integer number (67103316).

Almost surely, 2^655055565 is an apocalyptic number.

It is an amenable number.

655055565 is a deficient number, since it is larger than the sum of its proper divisors (418597491).

655055565 is a wasteful number, since it uses less digits than its factorization.

655055565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065180.

The product of its (nonzero) digits is 562500, while the sum is 42.

The square root of 655055565 is about 25594.0533132210. The cubic root of 655055565 is about 868.4791171741.

The spelling of 655055565 in words is "six hundred fifty-five million, fifty-five thousand, five hundred sixty-five".