8191066 has 16 divisors (see below), whose sum is σ = 13515264. Its totient is φ = 3699504.

The previous prime is 8191049. The next prime is 8191069. The reversal of 8191066 is 6601918.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8191069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2130 + ... + 4573.

It is an arithmetic number, because the mean of its divisors is an integer number (844704).

Almost surely, 2^8191066 is an apocalyptic number.

8191066 is a deficient number, since it is larger than the sum of its proper divisors (5324198).

8191066 is a wasteful number, since it uses less digits than its factorization.

8191066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6765.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 8191066 is about 2862.0038434635. The cubic root of 8191066 is about 201.5797064533.

The spelling of 8191066 in words is "eight million, one hundred ninety-one thousand, sixty-six".