656550655 has 8 divisors (see below), whose sum is σ = 788363712. Its totient is φ = 524905248.

The previous prime is 656550641. The next prime is 656550673. The reversal of 656550655 is 556055656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 656550655 - 2⁵ = 656550623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 33127 + ... + 49096.

It is an arithmetic number, because the mean of its divisors is an integer number (98545464).

Almost surely, 2^656550655 is an apocalyptic number.

656550655 is a deficient number, since it is larger than the sum of its proper divisors (131813057).

656550655 is a wasteful number, since it uses less digits than its factorization.

656550655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83825.

The product of its (nonzero) digits is 675000, while the sum is 43.

The square root of 656550655 is about 25623.2444276676. The cubic root of 656550655 is about 869.1393501401.

The spelling of 656550655 in words is "six hundred fifty-six million, five hundred fifty thousand, six hundred fifty-five".