1286606 has 4 divisors (see below), whose sum is σ = 1929912. Its totient is φ = 643302.

The previous prime is 1286587. The next prime is 1286617. The reversal of 1286606 is 6066821.

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

It is a congruent number.

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 as a sum of consecutive naturals, namely, 321650 + ... + 321653.

It is an arithmetic number, because the mean of its divisors is an integer number (482478).

2^1286606 is an apocalyptic number.

1286606 is a deficient number, since it is larger than the sum of its proper divisors (643306).

1286606 is an equidigital number, since it uses as much as digits as its factorization.

1286606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643305.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1286606 is about 1134.2865599133. The cubic root of 1286606 is about 108.7631701141.

The spelling of 1286606 in words is "one million, two hundred eighty-six thousand, six hundred six".