117783558 has 96 divisors (see below), whose sum is σ = 280294560. Its totient is φ = 37013760.

The previous prime is 117783553. The next prime is 117783577. The reversal of 117783558 is 855387711.

117783558 is a `hidden beast` number, since 1 + 17 + 7 + 83 + 558 = 666.

It is a super-3 number, since 3×117783558³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117783553) 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 47 ways as a sum of consecutive naturals, for example, 859666 + ... + 859802.

It is an arithmetic number, because the mean of its divisors is an integer number (2919735).

Almost surely, 2^117783558 is an apocalyptic number.

117783558 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 117783558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140147280).

117783558 is an abundant number, since it is smaller than the sum of its proper divisors (162511002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117783558 is a wasteful number, since it uses less digits than its factorization.

117783558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 232 counting only the distinct ones).

The product of its digits is 235200, while the sum is 45.

The square root of 117783558 is about 10852.8133679705. The cubic root of 117783558 is about 490.1867371005.

It can be divided in two parts, 117783 and 558, that added together give a triangular number (118341 = T₄₈₆).

The spelling of 117783558 in words is "one hundred seventeen million, seven hundred eighty-three thousand, five hundred fifty-eight".