117440661 has 8 divisors (see below), whose sum is σ = 168632800. Its totient is φ = 72271152.

The previous prime is 117440651. The next prime is 117440663. The reversal of 117440661 is 166044711.

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

It is not a de Polignac number, because 117440661 - 2⁶ = 117440597 is a prime.

It is a super-3 number, since 3×117440661³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117440663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1505611 + ... + 1505688.

It is an arithmetic number, because the mean of its divisors is an integer number (21079100).

Almost surely, 2^117440661 is an apocalyptic number.

It is an amenable number.

117440661 is a deficient number, since it is larger than the sum of its proper divisors (51192139).

117440661 is a wasteful number, since it uses less digits than its factorization.

117440661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011315.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 117440661 is about 10837.0042447163. The cubic root of 117440661 is about 489.7105898926.

The spelling of 117440661 in words is "one hundred seventeen million, four hundred forty thousand, six hundred sixty-one".