660202005 has 64 divisors (see below), whose sum is σ = 1138655232. Its totient is φ = 325839360.

The previous prime is 660201979. The next prime is 660202019. The reversal of 660202005 is 500202066.

660202005 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 660202005 - 2¹⁴ = 660185621 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2833369 + ... + 2833601.

It is an arithmetic number, because the mean of its divisors is an integer number (17791488).

Almost surely, 2^660202005 is an apocalyptic number.

660202005 is the 14835-th octagonal number.

It is an amenable number.

660202005 is a deficient number, since it is larger than the sum of its proper divisors (478453227).

660202005 is a wasteful number, since it uses less digits than its factorization.

660202005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 660202005 is about 25694.3963735286. The cubic root of 660202005 is about 870.7475870387.

The spelling of 660202005 in words is "six hundred sixty million, two hundred two thousand, five".