8640967 has 2 divisors, whose sum is σ = 8640968. Its totient is φ = 8640966.

The previous prime is 8640949. The next prime is 8640977. The reversal of 8640967 is 7690468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8640967 - 2²³ = 252359 is a prime.

It is a super-3 number, since 3×8640967³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8640977) 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 as a sum of consecutive naturals, namely, 4320483 + 4320484.

It is an arithmetic number, because the mean of its divisors is an integer number (4320484).

Almost surely, 2^8640967 is an apocalyptic number.

8640967 is a deficient number, since it is larger than the sum of its proper divisors (1).

8640967 is an equidigital number, since it uses as much as digits as its factorization.

8640967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 8640967 is about 2939.5521767780. The cubic root of 8640967 is about 205.2047686246.

The spelling of 8640967 in words is "eight million, six hundred forty thousand, nine hundred sixty-seven".