668934343 has 24 divisors (see below), whose sum is σ = 889763616. Its totient is φ = 490575360.

The previous prime is 668934319. The next prime is 668934353. The reversal of 668934343 is 343439866.

It is a de Polignac number, because none of the positive numbers 2^k-668934343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 668934293 and 668934302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668934353) 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 23 ways as a sum of consecutive naturals, for example, 8830 + ... + 37627.

It is an arithmetic number, because the mean of its divisors is an integer number (37073484).

Almost surely, 2^668934343 is an apocalyptic number.

668934343 is a deficient number, since it is larger than the sum of its proper divisors (220829273).

668934343 is a wasteful number, since it uses less digits than its factorization.

668934343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46503 (or 46492 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 46.

The square root of 668934343 is about 25863.7650584751. The cubic root of 668934343 is about 874.5698426609.

The spelling of 668934343 in words is "six hundred sixty-eight million, nine hundred thirty-four thousand, three hundred forty-three".