117863785 has 16 divisors (see below), whose sum is σ = 155194704. Its totient is φ = 85393152.

The previous prime is 117863741. The next prime is 117863789. The reversal of 117863785 is 587368711.

It can be written as a sum of positive squares in 8 ways, for example, as 444889 + 117418896 = 667^2 + 10836^2 .

It is not a de Polignac number, because 117863785 - 2⁷ = 117863657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117863789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13662 + ... + 20551.

It is an arithmetic number, because the mean of its divisors is an integer number (9699669).

Almost surely, 2^117863785 is an apocalyptic number.

It is an amenable number.

117863785 is a deficient number, since it is larger than the sum of its proper divisors (37330919).

117863785 is a wasteful number, since it uses less digits than its factorization.

117863785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34284.

The product of its digits is 282240, while the sum is 46.

The square root of 117863785 is about 10856.5088771667. The cubic root of 117863785 is about 490.2980069770.

The spelling of 117863785 in words is "one hundred seventeen million, eight hundred sixty-three thousand, seven hundred eighty-five".