1668317703 has 32 divisors (see below), whose sum is σ = 2425241280. Its totient is φ = 1013990400.

The previous prime is 1668317699. The next prime is 1668317711. The reversal of 1668317703 is 3077138661.

It is not a de Polignac number, because 1668317703 - 2² = 1668317699 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668317723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2554525 + ... + 2555177.

It is an arithmetic number, because the mean of its divisors is an integer number (75788790).

Almost surely, 2^1668317703 is an apocalyptic number.

1668317703 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1668317703 is a deficient number, since it is larger than the sum of its proper divisors (756923577).

1668317703 is a wasteful number, since it uses less digits than its factorization.

1668317703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 1668317703 is about 40845.0450238459. The cubic root of 1668317703 is about 1186.0224762956.

The spelling of 1668317703 in words is "one billion, six hundred sixty-eight million, three hundred seventeen thousand, seven hundred three".