1200685 has 8 divisors (see below), whose sum is σ = 1476216. Its totient is φ = 936960.

The previous prime is 1200679. The next prime is 1200691. The reversal of 1200685 is 5860021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1200679) and next prime (1200691).

It can be written as a sum of positive squares in 4 ways, for example, as 114921 + 1085764 = 339^2 + 1042^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-1200685 is a prime.

It is a Duffinian number.

1200685 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2724 + ... + 3133.

It is an arithmetic number, because the mean of its divisors is an integer number (184527).

2^1200685 is an apocalyptic number.

It is an amenable number.

1200685 is a deficient number, since it is larger than the sum of its proper divisors (275531).

1200685 is an equidigital number, since it uses as much as digits as its factorization.

1200685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5903.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1200685 is about 1095.7577286974. The cubic root of 1200685 is about 106.2860731032.

The spelling of 1200685 in words is "one million, two hundred thousand, six hundred eighty-five".