148805 has 4 divisors (see below), whose sum is σ = 178572. Its totient is φ = 119040.

The previous prime is 148793. The next prime is 148817. The reversal of 148805 is 508841.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (148793) and next prime (148817).

It can be written as a sum of positive squares in 2 ways, for example, as 37249 + 111556 = 193^2 + 334^2 .

It is not a de Polignac number, because 148805 - 2⁸ = 148549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14876 + ... + 14885.

It is an arithmetic number, because the mean of its divisors is an integer number (44643).

2¹⁴⁸⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

148805 is a deficient number, since it is larger than the sum of its proper divisors (29767).

148805 is an equidigital number, since it uses as much as digits as its factorization.

148805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29766.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 148805 is about 385.7525113334. The cubic root of 148805 is about 52.9914546565.

The spelling of 148805 in words is "one hundred forty-eight thousand, eight hundred five".