117578783 has 54 divisors (see below), whose sum is σ = 160010856. Its totient is φ = 85954176.

The previous prime is 117578779. The next prime is 117578807. The reversal of 117578783 is 387875711.

It is not a de Polignac number, because 117578783 - 2² = 117578779 is a prime.

It is a super-2 number, since 2×117578783² = 27649540423522178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117578183) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 5112110 + ... + 5112132.

It is an arithmetic number, because the mean of its divisors is an integer number (2963164).

Almost surely, 2^117578783 is an apocalyptic number.

117578783 is a deficient number, since it is larger than the sum of its proper divisors (42432073).

117578783 is a wasteful number, since it uses less digits than its factorization.

117578783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 66 counting only the distinct ones).

The product of its digits is 329280, while the sum is 47.

The square root of 117578783 is about 10843.3750742101. The cubic root of 117578783 is about 489.9024976066.

The spelling of 117578783 in words is "one hundred seventeen million, five hundred seventy-eight thousand, seven hundred eighty-three".