8180666 has 8 divisors (see below), whose sum is σ = 13214964. Its totient is φ = 3775680.

The previous prime is 8180611. The next prime is 8180671. The reversal of 8180666 is 6660818.

It can be written as a sum of positive squares in 2 ways, for example, as 6869641 + 1311025 = 2621^2 + 1145^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157295 + ... + 157346.

Almost surely, 2^8180666 is an apocalyptic number.

8180666 is a deficient number, since it is larger than the sum of its proper divisors (5034298).

8180666 is a wasteful number, since it uses less digits than its factorization.

8180666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314656.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 8180666 is about 2860.1863575648. The cubic root of 8180666 is about 201.4943566818.

The spelling of 8180666 in words is "eight million, one hundred eighty thousand, six hundred sixty-six".