117217664 has 16 divisors (see below), whose sum is σ = 233519820. Its totient is φ = 58608768.

The previous prime is 117217651. The next prime is 117217679. The reversal of 117217664 is 466712711.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 457754 + ... + 458009.

Almost surely, 2^117217664 is an apocalyptic number.

It is an amenable number.

117217664 is a deficient number, since it is larger than the sum of its proper divisors (116302156).

117217664 is an frugal number, since it uses more digits than its factorization.

117217664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915777 (or 915765 counting only the distinct ones).

The product of its digits is 14112, while the sum is 35.

The square root of 117217664 is about 10826.7106731454. The cubic root of 117217664 is about 489.4004384126.

The spelling of 117217664 in words is "one hundred seventeen million, two hundred seventeen thousand, six hundred sixty-four".