1505705 has 4 divisors (see below), whose sum is σ = 1806852. Its totient is φ = 1204560.

The previous prime is 1505687. The next prime is 1505711. The reversal of 1505705 is 5075051.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1075369 + 430336 = 1037^2 + 656^2 .

It is not a de Polignac number, because 1505705 - 2¹⁰ = 1504681 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150566 + ... + 150575.

It is an arithmetic number, because the mean of its divisors is an integer number (451713).

2^1505705 is an apocalyptic number.

It is an amenable number.

1505705 is a deficient number, since it is larger than the sum of its proper divisors (301147).

1505705 is an equidigital number, since it uses as much as digits as its factorization.

1505705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301146.

The product of its (nonzero) digits is 875, while the sum is 23.

The square root of 1505705 is about 1227.0717175455. The cubic root of 1505705 is about 114.6163649856.

The spelling of 1505705 in words is "one million, five hundred five thousand, seven hundred five".