1285683 has 8 divisors (see below), whose sum is σ = 1959168. Its totient is φ = 734664.

The previous prime is 1285679. The next prime is 1285699. The reversal of 1285683 is 3865821.

It is a happy number.

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

It is not a de Polignac number, because 1285683 - 2² = 1285679 is a prime.

1285683 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1285633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30591 + ... + 30632.

It is an arithmetic number, because the mean of its divisors is an integer number (244896).

2^1285683 is an apocalyptic number.

1285683 is a deficient number, since it is larger than the sum of its proper divisors (673485).

1285683 is an equidigital number, since it uses as much as digits as its factorization.

1285683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61233.

The product of its digits is 11520, while the sum is 33.

The square root of 1285683 is about 1133.8796232405. The cubic root of 1285683 is about 108.7371553068.

It can be divided in two parts, 12 and 85683, that multiplied together give a square (1028196 = 1014²).

The spelling of 1285683 in words is "one million, two hundred eighty-five thousand, six hundred eighty-three".