8455691 has 2 divisors, whose sum is σ = 8455692. Its totient is φ = 8455690.

The previous prime is 8455679. The next prime is 8455729. The reversal of 8455691 is 1965548.

It is an a-pointer prime, because the next prime (8455729) can be obtained adding 8455691 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8455691 - 2¹⁴ = 8439307 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8455621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4227845 + 4227846.

It is an arithmetic number, because the mean of its divisors is an integer number (4227846).

Almost surely, 2^8455691 is an apocalyptic number.

8455691 is a deficient number, since it is larger than the sum of its proper divisors (1).

8455691 is an equidigital number, since it uses as much as digits as its factorization.

8455691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 38.

The square root of 8455691 is about 2907.8670877466. The cubic root of 8455691 is about 203.7275213261.

The spelling of 8455691 in words is "eight million, four hundred fifty-five thousand, six hundred ninety-one".