1286086 has 4 divisors (see below), whose sum is σ = 1929132. Its totient is φ = 643042.

The previous prime is 1286081. The next prime is 1286093. The reversal of 1286086 is 6806821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6806821 = 7 ⋅972403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286081) by changing a digit.

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 as a sum of consecutive naturals, namely, 321520 + ... + 321523.

It is an arithmetic number, because the mean of its divisors is an integer number (482283).

2^1286086 is an apocalyptic number.

1286086 is a deficient number, since it is larger than the sum of its proper divisors (643046).

1286086 is an equidigital number, since it uses as much as digits as its factorization.

1286086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643045.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1286086 is about 1134.0573177754. The cubic root of 1286086 is about 108.7485154155.

The spelling of 1286086 in words is "one million, two hundred eighty-six thousand, eighty-six".