8601997 has 2 divisors, whose sum is σ = 8601998. Its totient is φ = 8601996.

The previous prime is 8601991. The next prime is 8602001. The reversal of 8601997 is 7991068.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8590761 + 11236 = 2931^2 + 106^2 .

It is a cyclic number.

It is not a de Polignac number, because 8601997 - 2⁷ = 8601869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8601991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4300998 + 4300999.

It is an arithmetic number, because the mean of its divisors is an integer number (4300999).

Almost surely, 2^8601997 is an apocalyptic number.

It is an amenable number.

8601997 is a deficient number, since it is larger than the sum of its proper divisors (1).

8601997 is an equidigital number, since it uses as much as digits as its factorization.

8601997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 8601997 is about 2932.9161256333. The cubic root of 8601997 is about 204.8958185688.

The spelling of 8601997 in words is "eight million, six hundred one thousand, nine hundred ninety-seven".