655706655 has 48 divisors (see below), whose sum is σ = 1202812416. Its totient is φ = 329757120.

The previous prime is 655706651. The next prime is 655706657. The reversal of 655706655 is 556607556.

655706655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 655706655 - 2² = 655706651 is a prime.

It is a super-2 number, since 2×655706655² = 859902434822578050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 655706655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655706651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69024 + ... + 77946.

It is an arithmetic number, because the mean of its divisors is an integer number (25058592).

Almost surely, 2^655706655 is an apocalyptic number.

655706655 is a deficient number, since it is larger than the sum of its proper divisors (547105761).

655706655 is a wasteful number, since it uses less digits than its factorization.

655706655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9028 (or 9025 counting only the distinct ones).

The product of its (nonzero) digits is 945000, while the sum is 45.

The square root of 655706655 is about 25606.7697103715. The cubic root of 655706655 is about 868.7667624045.

Subtracting from 655706655 its reverse (556607556), we obtain a palindrome (99099099).

The spelling of 655706655 in words is "six hundred fifty-five million, seven hundred six thousand, six hundred fifty-five".