668702383 has 4 divisors (see below), whose sum is σ = 675596320. Its totient is φ = 661808448.

The previous prime is 668702381. The next prime is 668702389. The reversal of 668702383 is 383207866.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 383207866 = 2 ⋅191603933.

It is a cyclic number.

It is not a de Polignac number, because 668702383 - 2¹ = 668702381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668702381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3446823 + ... + 3447016.

It is an arithmetic number, because the mean of its divisors is an integer number (168899080).

Almost surely, 2^668702383 is an apocalyptic number.

668702383 is a deficient number, since it is larger than the sum of its proper divisors (6893937).

668702383 is an equidigital number, since it uses as much as digits as its factorization.

668702383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6893936.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 668702383 is about 25859.2804037545. The cubic root of 668702383 is about 874.4687422187.

The spelling of 668702383 in words is "six hundred sixty-eight million, seven hundred two thousand, three hundred eighty-three".