681203 has 4 divisors (see below), whose sum is σ = 682968. Its totient is φ = 679440.

The previous prime is 681179. The next prime is 681221. The reversal of 681203 is 302186.

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 681203 - 2¹² = 677107 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 681203.

It is not an unprimeable number, because it can be changed into a prime (681253) 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, 26 + ... + 1167.

It is an arithmetic number, because the mean of its divisors is an integer number (170742).

2⁶⁸¹²⁰³ is an apocalyptic number.

681203 is a deficient number, since it is larger than the sum of its proper divisors (1765).

681203 is a wasteful number, since it uses less digits than its factorization.

681203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 681203 is about 825.3502286908. The cubic root of 681203 is about 87.9884196194.

Adding to 681203 its reverse (302186), we get a palindrome (983389).

The spelling of 681203 in words is "six hundred eighty-one thousand, two hundred three".