8701009 has 2 divisors, whose sum is σ = 8701010. Its totient is φ = 8701008.

The previous prime is 8701001. The next prime is 8701013. The reversal of 8701009 is 9001078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7756225 + 944784 = 2785^2 + 972^2 .

It is a cyclic number.

It is not a de Polignac number, because 8701009 - 2³ = 8701001 is a prime.

It is not a weakly prime, because it can be changed into another prime (8701001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4350504 + 4350505.

It is an arithmetic number, because the mean of its divisors is an integer number (4350505).

Almost surely, 2^8701009 is an apocalyptic number.

It is an amenable number.

8701009 is a deficient number, since it is larger than the sum of its proper divisors (1).

8701009 is an equidigital number, since it uses as much as digits as its factorization.

8701009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 8701009 is about 2949.7472773104. The cubic root of 8701009 is about 205.6789623497.

The spelling of 8701009 in words is "eight million, seven hundred one thousand, nine".