690303 has 4 divisors (see below), whose sum is σ = 920408. Its totient is φ = 460200.

The previous prime is 690293. The next prime is 690323. The reversal of 690303 is 303096.

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

It is not a de Polignac number, because 690303 - 2⁵ = 690271 is a prime.

It is an Ulam number.

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

690303 is a modest number, since divided by 303 gives 69 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 690303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690323) 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, 115048 + ... + 115053.

It is an arithmetic number, because the mean of its divisors is an integer number (230102).

2⁶⁹⁰³⁰³ is an apocalyptic number.

690303 is a deficient number, since it is larger than the sum of its proper divisors (230105).

690303 is a wasteful number, since it uses less digits than its factorization.

690303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230104.

The product of its (nonzero) digits is 486, while the sum is 21.

The square root of 690303 is about 830.8447508410. The cubic root of 690303 is about 88.3784920000.

Adding to 690303 its reverse (303096), we get a palindrome (993399).

It can be divided in two parts, 6 and 90303, that added together give a palindrome (90309).

The spelling of 690303 in words is "six hundred ninety thousand, three hundred three".