117871065 has 64 divisors (see below), whose sum is σ = 230630400. Its totient is φ = 56754432.

The previous prime is 117871057. The next prime is 117871073. The reversal of 117871065 is 560178711.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (117871057) and next prime (117871073).

It is not a de Polignac number, because 117871065 - 2³ = 117871057 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 81771 + ... + 83199.

It is an arithmetic number, because the mean of its divisors is an integer number (3603600).

Almost surely, 2^117871065 is an apocalyptic number.

117871065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117871065 is a deficient number, since it is larger than the sum of its proper divisors (112759335).

117871065 is a wasteful number, since it uses less digits than its factorization.

117871065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503 (or 1497 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 36.

The square root of 117871065 is about 10856.8441547256. The cubic root of 117871065 is about 490.3081013867.

The spelling of 117871065 in words is "one hundred seventeen million, eight hundred seventy-one thousand, sixty-five".