685442303 has 32 divisors (see below), whose sum is σ = 860869632. Its totient is φ = 531360000.

The previous prime is 685442291. The next prime is 685442323. The reversal of 685442303 is 303244586.

It is a cyclic number.

It is not a de Polignac number, because 685442303 - 2⁸ = 685442047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685442323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1140203 + ... + 1140803.

It is an arithmetic number, because the mean of its divisors is an integer number (26902176).

Almost surely, 2^685442303 is an apocalyptic number.

685442303 is a deficient number, since it is larger than the sum of its proper divisors (175427329).

685442303 is a wasteful number, since it uses less digits than its factorization.

685442303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 685442303 is about 26180.9530575187. The cubic root of 685442303 is about 881.7056721074.

Adding to 685442303 its reverse (303244586), we get a palindrome (988686889).

The spelling of 685442303 in words is "six hundred eighty-five million, four hundred forty-two thousand, three hundred three".