1161617 has 2 divisors, whose sum is σ = 1161618. Its totient is φ = 1161616.

The previous prime is 1161599. The next prime is 1161619. The reversal of 1161617 is 7161611.

1161617 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 802816 + 358801 = 896^2 + 599^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161617 - 2⁶ = 1161553 is a prime.

Together with 1161619, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1161592 and 1161601.

It is not a weakly prime, because it can be changed into another prime (1161619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580808 + 580809.

It is an arithmetic number, because the mean of its divisors is an integer number (580809).

2^1161617 is an apocalyptic number.

It is an amenable number.

1161617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161617 is an equidigital number, since it uses as much as digits as its factorization.

1161617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 23.

The square root of 1161617 is about 1077.7833734104. The cubic root of 1161617 is about 105.1205569175.

The spelling of 1161617 in words is "one million, one hundred sixty-one thousand, six hundred seventeen".