668126343 has 4 divisors (see below), whose sum is σ = 890835128. Its totient is φ = 445417560.

The previous prime is 668126341. The next prime is 668126363. The reversal of 668126343 is 343621866.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 668126343 - 2¹ = 668126341 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 (668126341) 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, 111354388 + ... + 111354393.

It is an arithmetic number, because the mean of its divisors is an integer number (222708782).

Almost surely, 2^668126343 is an apocalyptic number.

668126343 is a deficient number, since it is larger than the sum of its proper divisors (222708785).

668126343 is a wasteful number, since it uses less digits than its factorization.

668126343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222708784.

The product of its digits is 124416, while the sum is 39.

The square root of 668126343 is about 25848.1400297971. The cubic root of 668126343 is about 874.2175723417.

The spelling of 668126343 in words is "six hundred sixty-eight million, one hundred twenty-six thousand, three hundred forty-three".