7113661 has 2 divisors, whose sum is σ = 7113662. Its totient is φ = 7113660.

The previous prime is 7113641. The next prime is 7113677. The reversal of 7113661 is 1663117.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6125625 + 988036 = 2475^2 + 994^2 .

It is an emirp because it is prime and its reverse (1663117) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7113661 - 2¹⁵ = 7080893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7113611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3556830 + 3556831.

It is an arithmetic number, because the mean of its divisors is an integer number (3556831).

Almost surely, 2^7113661 is an apocalyptic number.

It is an amenable number.

7113661 is a deficient number, since it is larger than the sum of its proper divisors (1).

7113661 is an equidigital number, since it uses as much as digits as its factorization.

7113661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 25.

The square root of 7113661 is about 2667.1447279816. The cubic root of 7113661 is about 192.3229248119.

Adding to 7113661 its reverse (1663117), we get a palindrome (8776778).

The spelling of 7113661 in words is "seven million, one hundred thirteen thousand, six hundred sixty-one".