5170000666 has 4 divisors (see below), whose sum is σ = 7755001002. Its totient is φ = 2585000332.

The previous prime is 5170000637. The next prime is 5170000721. The reversal of 5170000666 is 6660000715.

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

It can be written as a sum of positive squares in only one way, i.e., 2876069641 + 2293931025 = 53629^2 + 47895^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 as a sum of consecutive naturals, namely, 1292500165 + ... + 1292500168.

Almost surely, 2^5170000666 is an apocalyptic number.

5170000666 is a deficient number, since it is larger than the sum of its proper divisors (2585000336).

5170000666 is a wasteful number, since it uses less digits than its factorization.

5170000666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585000335.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 5170000666 is about 71902.7166802479. The cubic root of 5170000666 is about 1729.1401683556.

The spelling of 5170000666 in words is "five billion, one hundred seventy million, six hundred sixty-six", and thus it is an aban number.