1208643 has 4 divisors (see below), whose sum is σ = 1611528. Its totient is φ = 805760.

The previous prime is 1208591. The next prime is 1208651. The reversal of 1208643 is 3468021.

It is a happy number.

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 1208643 - 2⁸ = 1208387 is a prime.

It is a D-number.

1208643 is a lucky number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1208663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201438 + ... + 201443.

It is an arithmetic number, because the mean of its divisors is an integer number (402882).

2^1208643 is an apocalyptic number.

1208643 is a deficient number, since it is larger than the sum of its proper divisors (402885).

1208643 is an equidigital number, since it uses as much as digits as its factorization.

1208643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402884.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1208643 is about 1099.3830087827. The cubic root of 1208643 is about 106.5203734525.

The spelling of 1208643 in words is "one million, two hundred eight thousand, six hundred forty-three".