666982802305 has 8 divisors (see below), whose sum is σ = 800471529000. Its totient is φ = 533524797696.

The previous prime is 666982802273. The next prime is 666982802329. The reversal of 666982802305 is 503208289666.

It can be written as a sum of positive squares in 4 ways, for example, as 58281685056 + 608701117249 = 241416^2 + 780193^2 .

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 666982802305 - 2⁵ = 666982802273 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7632730 + ... + 7719619.

It is an arithmetic number, because the mean of its divisors is an integer number (100058941125).

Almost surely, 2^666982802305 is an apocalyptic number.

It is an amenable number.

666982802305 is a deficient number, since it is larger than the sum of its proper divisors (133488726695).

666982802305 is a wasteful number, since it uses less digits than its factorization.

666982802305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15361043.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 666982802305 in words is "six hundred sixty-six billion, nine hundred eighty-two million, eight hundred two thousand, three hundred five".