118645 has 8 divisors (see below), whose sum is σ = 145080. Its totient is φ = 93120.

The previous prime is 118633. The next prime is 118661. The reversal of 118645 is 546811.

It can be written as a sum of positive squares in 4 ways, for example, as 1681 + 116964 = 41^2 + 342^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-118645 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111 + ... + 499.

It is an arithmetic number, because the mean of its divisors is an integer number (18135).

2¹¹⁸⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

118645 is a deficient number, since it is larger than the sum of its proper divisors (26435).

118645 is an equidigital number, since it uses as much as digits as its factorization.

118645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455.

The product of its digits is 960, while the sum is 25.

The square root of 118645 is about 344.4488350975. The cubic root of 118645 is about 49.1378873358.

The spelling of 118645 in words is "one hundred eighteen thousand, six hundred forty-five".