1280683 has 4 divisors (see below), whose sum is σ = 1292760. Its totient is φ = 1268608.

The previous prime is 1280677. The next prime is 1280693. The reversal of 1280683 is 3860821.

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

It is a cyclic number.

It is not a de Polignac number, because 1280683 - 2⁵ = 1280651 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1280603) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 5878 + ... + 6091.

It is an arithmetic number, because the mean of its divisors is an integer number (323190).

2^1280683 is an apocalyptic number.

1280683 is a deficient number, since it is larger than the sum of its proper divisors (12077).

1280683 is a wasteful number, since it uses less digits than its factorization.

1280683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12076.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1280683 is about 1131.6726558506. The cubic root of 1280683 is about 108.5960131802.

The spelling of 1280683 in words is "one million, two hundred eighty thousand, six hundred eighty-three".