8661767 has 2 divisors, whose sum is σ = 8661768. Its totient is φ = 8661766.

The previous prime is 8661743. The next prime is 8661769. The reversal of 8661767 is 7671668.

8661767 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8661767 - 2⁶ = 8661703 is a prime.

Together with 8661769, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8661769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4330883 + 4330884.

It is an arithmetic number, because the mean of its divisors is an integer number (4330884).

Almost surely, 2^8661767 is an apocalyptic number.

8661767 is a deficient number, since it is larger than the sum of its proper divisors (1).

8661767 is an equidigital number, since it uses as much as digits as its factorization.

8661767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 8661767 is about 2943.0880041208. The cubic root of 8661767 is about 205.3692887529.

Subtracting from 8661767 its reverse (7671668), we obtain a palindrome (990099).

The spelling of 8661767 in words is "eight million, six hundred sixty-one thousand, seven hundred sixty-seven".