7168661 has 2 divisors, whose sum is σ = 7168662. Its totient is φ = 7168660.

The previous prime is 7168649. The next prime is 7168669. The reversal of 7168661 is 1668617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5428900 + 1739761 = 2330^2 + 1319^2 .

It is an emirp because it is prime and its reverse (1668617) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7168661 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7168669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3584330 + 3584331.

It is an arithmetic number, because the mean of its divisors is an integer number (3584331).

Almost surely, 2^7168661 is an apocalyptic number.

It is an amenable number.

7168661 is a deficient number, since it is larger than the sum of its proper divisors (1).

7168661 is an equidigital number, since it uses as much as digits as its factorization.

7168661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 7168661 is about 2677.4355267681. The cubic root of 7168661 is about 192.8173076782.

The spelling of 7168661 in words is "seven million, one hundred sixty-eight thousand, six hundred sixty-one".