7166563 has 2 divisors, whose sum is σ = 7166564. Its totient is φ = 7166562.

The previous prime is 7166561. The next prime is 7166569. The reversal of 7166563 is 3656617.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3656617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7166563 - 2¹ = 7166561 is a prime.

Together with 7166561, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (7166561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3583281 + 3583282.

It is an arithmetic number, because the mean of its divisors is an integer number (3583282).

Almost surely, 2^7166563 is an apocalyptic number.

7166563 is a deficient number, since it is larger than the sum of its proper divisors (1).

7166563 is an equidigital number, since it uses as much as digits as its factorization.

7166563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 7166563 is about 2677.0437052839. The cubic root of 7166563 is about 192.7984956954.

The spelling of 7166563 in words is "seven million, one hundred sixty-six thousand, five hundred sixty-three".