668741293 has 8 divisors (see below), whose sum is σ = 749253600. Its totient is φ = 591515280.

The previous prime is 668741279. The next prime is 668741303. The reversal of 668741293 is 392147866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-668741293 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 (668741273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 821143 + ... + 821956.

It is an arithmetic number, because the mean of its divisors is an integer number (93656700).

Almost surely, 2^668741293 is an apocalyptic number.

It is an amenable number.

668741293 is a deficient number, since it is larger than the sum of its proper divisors (80512307).

668741293 is a wasteful number, since it uses less digits than its factorization.

668741293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643147.

The product of its digits is 435456, while the sum is 46.

The square root of 668741293 is about 25860.0327339313. The cubic root of 668741293 is about 874.4857028874.

The spelling of 668741293 in words is "six hundred sixty-eight million, seven hundred forty-one thousand, two hundred ninety-three".