1280066 has 8 divisors (see below), whose sum is σ = 2033100. Its totient is φ = 602368.

The previous prime is 1280023. The next prime is 1280101. The reversal of 1280066 is 6600821.

It can be written as a sum of positive squares in 2 ways, for example, as 1050625 + 229441 = 1025^2 + 479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18791 + ... + 18858.

2^1280066 is an apocalyptic number.

1280066 is a deficient number, since it is larger than the sum of its proper divisors (753034).

1280066 is a wasteful number, since it uses less digits than its factorization.

1280066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37668.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1280066 is about 1131.4000176772. The cubic root of 1280066 is about 108.5785707938.

Adding to 1280066 its reverse (6600821), we get a palindrome (7880887).

The spelling of 1280066 in words is "one million, two hundred eighty thousand, sixty-six".