1284806 has 4 divisors (see below), whose sum is σ = 1927212. Its totient is φ = 642402.

The previous prime is 1284793. The next prime is 1284823. The reversal of 1284806 is 6084821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6084821 = 2273 ⋅2677.

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, 321200 + ... + 321203.

It is an arithmetic number, because the mean of its divisors is an integer number (481803).

2^1284806 is an apocalyptic number.

1284806 is a deficient number, since it is larger than the sum of its proper divisors (642406).

1284806 is an equidigital number, since it uses as much as digits as its factorization.

1284806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642405.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1284806 is about 1133.4928319138. The cubic root of 1284806 is about 108.7124254741.

The spelling of 1284806 in words is "one million, two hundred eighty-four thousand, eight hundred six".