117458865 has 48 divisors (see below), whose sum is σ = 219714768. Its totient is φ = 57827328.

The previous prime is 117458863. The next prime is 117458879. The reversal of 117458865 is 568854711.

117458865 is a `hidden beast` number, since 1 + 1 + 7 + 4 + 588 + 65 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 104976 + 117353889 = 324^2 + 10833^2 .

It is not a de Polignac number, because 117458865 - 2¹ = 117458863 is a prime.

It is a super-3 number, since 3×117458865³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 117458865.

It is not an unprimeable number, because it can be changed into a prime (117458863) 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, 39097 + ... + 41993.

It is an arithmetic number, because the mean of its divisors is an integer number (4577391).

Almost surely, 2^117458865 is an apocalyptic number.

117458865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117458865 is a deficient number, since it is larger than the sum of its proper divisors (102255903).

117458865 is a wasteful number, since it uses less digits than its factorization.

117458865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2978 (or 2975 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 117458865 is about 10837.8441121839. The cubic root of 117458865 is about 489.7358912688.

The spelling of 117458865 in words is "one hundred seventeen million, four hundred fifty-eight thousand, eight hundred sixty-five".