8136666 has 32 divisors (see below), whose sum is σ = 18429120. Its totient is φ = 2660112.

The previous prime is 8136649. The next prime is 8136677. The reversal of 8136666 is 6666318.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8136666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1441 + ... + 4283.

It is an arithmetic number, because the mean of its divisors is an integer number (575910).

Almost surely, 2^8136666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8136666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9214560).

8136666 is an abundant number, since it is smaller than the sum of its proper divisors (10292454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8136666 is a wasteful number, since it uses less digits than its factorization.

8136666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907 (or 2901 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 8136666 is about 2852.4841804995. The cubic root of 8136666 is about 201.1324589146.

The spelling of 8136666 in words is "eight million, one hundred thirty-six thousand, six hundred sixty-six".