1171667217 has 16 divisors (see below), whose sum is σ = 1890421632. Its totient is φ = 630140160.

The previous prime is 1171667177. The next prime is 1171667297. The reversal of 1171667217 is 7127661711.

It is not a de Polignac number, because 1171667217 - 2¹¹ = 1171665169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1171667297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1640634 + ... + 1641347.

It is an arithmetic number, because the mean of its divisors is an integer number (118151352).

Almost surely, 2^1171667217 is an apocalyptic number.

1171667217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1171667217 is a deficient number, since it is larger than the sum of its proper divisors (718754415).

1171667217 is a wasteful number, since it uses less digits than its factorization.

1171667217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3282008.

The product of its digits is 24696, while the sum is 39.

The square root of 1171667217 is about 34229.6248445699. The cubic root of 1171667217 is about 1054.2285164882.

The spelling of 1171667217 in words is "one billion, one hundred seventy-one million, six hundred sixty-seven thousand, two hundred seventeen".