668795341 has 4 divisors (see below), whose sum is σ = 670588732. Its totient is φ = 667001952.

The previous prime is 668795329. The next prime is 668795353. The reversal of 668795341 is 143597866.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 143597866 = 2 ⋅71798933.

It is an interprime number because it is at equal distance from previous prime (668795329) and next prime (668795353).

It can be written as a sum of positive squares in 2 ways, for example, as 379080900 + 289714441 = 19470^2 + 17021^2 .

It is a cyclic number.

It is not a de Polignac number, because 668795341 - 2⁷ = 668795213 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 (668795371) 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, 896136 + ... + 896881.

It is an arithmetic number, because the mean of its divisors is an integer number (167647183).

Almost surely, 2^668795341 is an apocalyptic number.

It is an amenable number.

668795341 is a deficient number, since it is larger than the sum of its proper divisors (1793391).

668795341 is a wasteful number, since it uses less digits than its factorization.

668795341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793390.

The product of its digits is 1088640, while the sum is 49.

The square root of 668795341 is about 25861.0777230958. The cubic root of 668795341 is about 874.5092610409.

The spelling of 668795341 in words is "six hundred sixty-eight million, seven hundred ninety-five thousand, three hundred forty-one".