8618809 has 2 divisors, whose sum is σ = 8618810. Its totient is φ = 8618808.

The previous prime is 8618789. The next prime is 8618833. The reversal of 8618809 is 9088168.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6487209 + 2131600 = 2547^2 + 1460^2 .

It is a cyclic number.

It is not a de Polignac number, because 8618809 - 2⁷ = 8618681 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8618879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4309404 + 4309405.

It is an arithmetic number, because the mean of its divisors is an integer number (4309405).

Almost surely, 2^8618809 is an apocalyptic number.

It is an amenable number.

8618809 is a deficient number, since it is larger than the sum of its proper divisors (1).

8618809 is an equidigital number, since it uses as much as digits as its factorization.

8618809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 8618809 is about 2935.7808160692. The cubic root of 8618809 is about 205.0292165378.

The spelling of 8618809 in words is "eight million, six hundred eighteen thousand, eight hundred nine".