8656091 has 2 divisors, whose sum is σ = 8656092. Its totient is φ = 8656090.

The previous prime is 8656079. The next prime is 8656093. The reversal of 8656091 is 1906568.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8656091 - 2¹⁸ = 8393947 is a prime.

It is a super-2 number, since 2×8656091² = 149855822800562, which contains 22 as substring.

Together with 8656093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8656093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4328045 + 4328046.

It is an arithmetic number, because the mean of its divisors is an integer number (4328046).

Almost surely, 2^8656091 is an apocalyptic number.

8656091 is a deficient number, since it is larger than the sum of its proper divisors (1).

8656091 is an equidigital number, since it uses as much as digits as its factorization.

8656091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 8656091 is about 2942.1235528101. The cubic root of 8656091 is about 205.3244198943.

The spelling of 8656091 in words is "eight million, six hundred fifty-six thousand, ninety-one".