117580721 has 8 divisors (see below), whose sum is σ = 131050080. Its totient is φ = 104839488.

The previous prime is 117580711. The next prime is 117580739. The reversal of 117580721 is 127085711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117580721 - 2⁶ = 117580657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117580711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181691 + ... + 182336.

It is an arithmetic number, because the mean of its divisors is an integer number (16381260).

Almost surely, 2^117580721 is an apocalyptic number.

It is an amenable number.

117580721 is a deficient number, since it is larger than the sum of its proper divisors (13469359).

117580721 is a wasteful number, since it uses less digits than its factorization.

117580721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364063.

The product of its (nonzero) digits is 3920, while the sum is 32.

The square root of 117580721 is about 10843.4644371621. The cubic root of 117580721 is about 489.9051892085.

The spelling of 117580721 in words is "one hundred seventeen million, five hundred eighty thousand, seven hundred twenty-one".