668838303 has 24 divisors (see below), whose sum is σ = 1145010048. Its totient is φ = 382192344.

The previous prime is 668838301. The next prime is 668838329. The reversal of 668838303 is 303838866.

It is a happy number.

It is not a de Polignac number, because 668838303 - 2¹ = 668838301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668838301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194901 + ... + 198302.

It is an arithmetic number, because the mean of its divisors is an integer number (47708752).

Almost surely, 2^668838303 is an apocalyptic number.

668838303 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

668838303 is a deficient number, since it is larger than the sum of its proper divisors (476171745).

668838303 is an equidigital number, since it uses as much as digits as its factorization.

668838303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393225 (or 393213 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 668838303 is about 25861.9083402598. The cubic root of 668838303 is about 874.5279861825.

The spelling of 668838303 in words is "six hundred sixty-eight million, eight hundred thirty-eight thousand, three hundred three".