117136887 has 16 divisors (see below), whose sum is σ = 184650240. Its totient is φ = 64626912.

The previous prime is 117136883. The next prime is 117136937. The reversal of 117136887 is 788631711.

It is not a de Polignac number, because 117136887 - 2² = 117136883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117136883) 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, 95563 + ... + 96780.

It is an arithmetic number, because the mean of its divisors is an integer number (11540640).

Almost surely, 2^117136887 is an apocalyptic number.

117136887 is a deficient number, since it is larger than the sum of its proper divisors (67513353).

117136887 is a wasteful number, since it uses less digits than its factorization.

117136887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192382.

The product of its digits is 56448, while the sum is 42.

The square root of 117136887 is about 10822.9795805037. The cubic root of 117136887 is about 489.2879940870.

The spelling of 117136887 in words is "one hundred seventeen million, one hundred thirty-six thousand, eight hundred eighty-seven".