8091667 has 4 divisors (see below), whose sum is σ = 8370720. Its totient is φ = 7812616.

The previous prime is 8091617. The next prime is 8091679. The reversal of 8091667 is 7661908.

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

It is a cyclic number.

It is not a de Polignac number, because 8091667 - 2¹¹ = 8089619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8091617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139483 + ... + 139540.

It is an arithmetic number, because the mean of its divisors is an integer number (2092680).

Almost surely, 2^8091667 is an apocalyptic number.

8091667 is a deficient number, since it is larger than the sum of its proper divisors (279053).

8091667 is a wasteful number, since it uses less digits than its factorization.

8091667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279052.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 8091667 is about 2844.5855585656. The cubic root of 8091667 is about 200.7609924467.

The spelling of 8091667 in words is "eight million, ninety-one thousand, six hundred sixty-seven".