659955005 has 4 divisors (see below), whose sum is σ = 791946012. Its totient is φ = 527964000.

The previous prime is 659954989. The next prime is 659955029. The reversal of 659955005 is 500559956.

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 339222724 + 320732281 = 18418^2 + 17909^2 .

It is not a de Polignac number, because 659955005 - 2⁴ = 659954989 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 3 ways as a sum of consecutive naturals, for example, 65995496 + ... + 65995505.

It is an arithmetic number, because the mean of its divisors is an integer number (197986503).

Almost surely, 2^659955005 is an apocalyptic number.

It is an amenable number.

659955005 is a deficient number, since it is larger than the sum of its proper divisors (131991007).

659955005 is a wasteful number, since it uses less digits than its factorization.

659955005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131991006.

The product of its (nonzero) digits is 303750, while the sum is 44.

The square root of 659955005 is about 25689.5894284047. The cubic root of 659955005 is about 870.6389831671.

The spelling of 659955005 in words is "six hundred fifty-nine million, nine hundred fifty-five thousand, five".