1245585 has 16 divisors (see below), whose sum is σ = 2174400. Its totient is φ = 603840.

The previous prime is 1245557. The next prime is 1245589. The reversal of 1245585 is 5855421.

It is not a de Polignac number, because 1245585 - 2¹¹ = 1243537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1245589) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3610 + ... + 3939.

It is an arithmetic number, because the mean of its divisors is an integer number (135900).

2^1245585 is an apocalyptic number.

1245585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1245585 is a deficient number, since it is larger than the sum of its proper divisors (928815).

1245585 is a wasteful number, since it uses less digits than its factorization.

1245585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7568.

The product of its digits is 8000, while the sum is 30.

The square root of 1245585 is about 1116.0577942024. The cubic root of 1245585 is about 107.5947605046.

It can be divided in two parts, 1245 and 585, that added together give a triangular number (1830 = T₆₀).

The spelling of 1245585 in words is "one million, two hundred forty-five thousand, five hundred eighty-five".