147705305 has 12 divisors (see below), whose sum is σ = 194825316. Its totient is φ = 107421600.

The previous prime is 147705293. The next prime is 147705361. The reversal of 147705305 is 503507741.

It can be written as a sum of positive squares in 2 ways, for example, as 61512649 + 86192656 = 7843^2 + 9284^2 .

It is not a de Polignac number, because 147705305 - 2¹⁰ = 147704281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121466 + ... + 122675.

It is an arithmetic number, because the mean of its divisors is an integer number (16235443).

Almost surely, 2^147705305 is an apocalyptic number.

It is an amenable number.

147705305 is a deficient number, since it is larger than the sum of its proper divisors (47120011).

147705305 is a wasteful number, since it uses less digits than its factorization.

147705305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244168 (or 244157 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 147705305 is about 12153.4071354497. The cubic root of 147705305 is about 528.6059305281.

The spelling of 147705305 in words is "one hundred forty-seven million, seven hundred five thousand, three hundred five".