8590721 has 2 divisors, whose sum is σ = 8590722. Its totient is φ = 8590720.

The previous prime is 8590711. The next prime is 8590723. The reversal of 8590721 is 1270958.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4999696 + 3591025 = 2236^2 + 1895^2 .

It is a cyclic number.

It is not a de Polignac number, because 8590721 - 2⁶ = 8590657 is a prime.

Together with 8590723, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8590723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4295360 + 4295361.

It is an arithmetic number, because the mean of its divisors is an integer number (4295361).

Almost surely, 2^8590721 is an apocalyptic number.

It is an amenable number.

8590721 is a deficient number, since it is larger than the sum of its proper divisors (1).

8590721 is an equidigital number, since it uses as much as digits as its factorization.

8590721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 8590721 is about 2930.9931763824. The cubic root of 8590721 is about 204.8062496186.

The spelling of 8590721 in words is "eight million, five hundred ninety thousand, seven hundred twenty-one".