1268505 has 24 divisors (see below), whose sum is σ = 2513472. Its totient is φ = 579744.

The previous prime is 1268479. The next prime is 1268537. The reversal of 1268505 is 5058621.

It is not a de Polignac number, because 1268505 - 2¹⁰ = 1267481 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1699 + ... + 2328.

It is an arithmetic number, because the mean of its divisors is an integer number (104728).

2^1268505 is an apocalyptic number.

1268505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1268505 is a deficient number, since it is larger than the sum of its proper divisors (1244967).

1268505 is a wasteful number, since it uses less digits than its factorization.

1268505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4045 (or 4042 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1268505 is about 1126.2792726496. The cubic root of 1268505 is about 108.2507035923.

The spelling of 1268505 in words is "one million, two hundred sixty-eight thousand, five hundred five".