8417582666 has 8 divisors (see below), whose sum is σ = 12738112164. Its totient is φ = 4171545280.

The previous prime is 8417582653. The next prime is 8417582671. The reversal of 8417582666 is 6662857148.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5472892441 + 2944690225 = 73979^2 + 54265^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 18622745 + ... + 18623196.

Almost surely, 2^8417582666 is an apocalyptic number.

8417582666 is a deficient number, since it is larger than the sum of its proper divisors (4320529498).

8417582666 is a wasteful number, since it uses less digits than its factorization.

8417582666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37246056.

The product of its digits is 3870720, while the sum is 53.

The square root of 8417582666 is about 91747.3850635537. The cubic root of 8417582666 is about 2034.2100551483.

The spelling of 8417582666 in words is "eight billion, four hundred seventeen million, five hundred eighty-two thousand, six hundred sixty-six".