145785 has 8 divisors (see below), whose sum is σ = 233280. Its totient is φ = 77744.

The previous prime is 145777. The next prime is 145799. The reversal of 145785 is 587541.

145785 is nontrivially palindromic in base 14.

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

It is a cyclic number.

It is not a de Polignac number, because 145785 - 2³ = 145777 is a prime.

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, 4845 + ... + 4874.

It is an arithmetic number, because the mean of its divisors is an integer number (29160).

2¹⁴⁵⁷⁸⁵ is an apocalyptic number.

145785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145785 is a deficient number, since it is larger than the sum of its proper divisors (87495).

145785 is an equidigital number, since it uses as much as digits as its factorization.

145785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9727.

The product of its digits is 5600, while the sum is 30.

The square root of 145785 is about 381.8180194805. The cubic root of 145785 is about 52.6305142767.

Subtracting from 145785 its product of digits (5600), we obtain a triangular number (140185 = T₅₂₉).

The spelling of 145785 in words is "one hundred forty-five thousand, seven hundred eighty-five".