116645 has 8 divisors (see below), whose sum is σ = 143640. Its totient is φ = 90880.

The previous prime is 116639. The next prime is 116657. The reversal of 116645 is 546611.

116645 = T₅₄ + T₅₅ + ... + T₉₄.

116645 = 241² + 242².

It can be written as a sum of positive squares in 4 ways, for example, as 2401 + 114244 = 49^2 + 338^2 .

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

It is not a de Polignac number, because 116645 - 2¹⁶ = 51109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 116645.

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, 80 + ... + 489.

It is an arithmetic number, because the mean of its divisors is an integer number (17955).

2¹¹⁶⁶⁴⁵ is an apocalyptic number.

116645 is the 242-nd centered square number.

It is an amenable number.

116645 is a deficient number, since it is larger than the sum of its proper divisors (26995).

116645 is an equidigital number, since it uses as much as digits as its factorization.

116645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615.

The product of its digits is 720, while the sum is 23.

The square root of 116645 is about 341.5333073069. The cubic root of 116645 is about 48.8602152414.

The spelling of 116645 in words is "one hundred sixteen thousand, six hundred forty-five".