1171664317 has 4 divisors (see below), whose sum is σ = 1233330880. Its totient is φ = 1109997756.

The previous prime is 1171664297. The next prime is 1171664323. The reversal of 1171664317 is 7134661711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1171664317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171664717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30833253 + ... + 30833290.

It is an arithmetic number, because the mean of its divisors is an integer number (308332720).

Almost surely, 2^1171664317 is an apocalyptic number.

It is an amenable number.

1171664317 is a deficient number, since it is larger than the sum of its proper divisors (61666563).

1171664317 is an equidigital number, since it uses as much as digits as its factorization.

1171664317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61666562.

The product of its digits is 21168, while the sum is 37.

The square root of 1171664317 is about 34229.5824835770. The cubic root of 1171664317 is about 1054.2276467119.

The spelling of 1171664317 in words is "one billion, one hundred seventy-one million, six hundred sixty-four thousand, three hundred seventeen".