7166609 has 2 divisors, whose sum is σ = 7166610. Its totient is φ = 7166608.

The previous prime is 7166603. The next prime is 7166633. The reversal of 7166609 is 9066617.

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., 7006609 + 160000 = 2647^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 7166609 - 2⁸ = 7166353 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7166603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3583304 + 3583305.

It is an arithmetic number, because the mean of its divisors is an integer number (3583305).

Almost surely, 2^7166609 is an apocalyptic number.

It is an amenable number.

7166609 is a deficient number, since it is larger than the sum of its proper divisors (1).

7166609 is an equidigital number, since it uses as much as digits as its factorization.

7166609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 7166609 is about 2677.0522968370. The cubic root of 7166609 is about 192.7989081996.

The spelling of 7166609 in words is "seven million, one hundred sixty-six thousand, six hundred nine".