1286485 has 4 divisors (see below), whose sum is σ = 1543788. Its totient is φ = 1029184.

The previous prime is 1286447. The next prime is 1286489. The reversal of 1286485 is 5846821.

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 438244 + 848241 = 662^2 + 921^2 .

It is a cyclic number.

It is not a de Polignac number, because 1286485 - 2¹⁵ = 1253717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1286485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128644 + ... + 128653.

It is an arithmetic number, because the mean of its divisors is an integer number (385947).

2^1286485 is an apocalyptic number.

It is an amenable number.

1286485 is a deficient number, since it is larger than the sum of its proper divisors (257303).

1286485 is an equidigital number, since it uses as much as digits as its factorization.

1286485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257302.

The product of its digits is 15360, while the sum is 34.

The square root of 1286485 is about 1134.2332211675. The cubic root of 1286485 is about 108.7597604311.

It can be divided in two parts, 1286 and 485, that added together give a palindrome (1771).

The spelling of 1286485 in words is "one million, two hundred eighty-six thousand, four hundred eighty-five".