655056617 has 4 divisors (see below), whose sum is σ = 661809876. Its totient is φ = 648303360.

The previous prime is 655056607. The next prime is 655056641. The reversal of 655056617 is 716650556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 238733401 + 416323216 = 15451^2 + 20404^2 .

It is a cyclic number.

It is not a de Polignac number, because 655056617 - 2⁴ = 655056601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655056607) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3376484 + ... + 3376677.

It is an arithmetic number, because the mean of its divisors is an integer number (165452469).

Almost surely, 2^655056617 is an apocalyptic number.

It is an amenable number.

655056617 is a deficient number, since it is larger than the sum of its proper divisors (6753259).

655056617 is an equidigital number, since it uses as much as digits as its factorization.

655056617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6753258.

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 655056617 is about 25594.0738648618. The cubic root of 655056617 is about 868.4795820912.

The spelling of 655056617 in words is "six hundred fifty-five million, fifty-six thousand, six hundred seventeen".