660813341 has 8 divisors (see below), whose sum is σ = 707547960. Its totient is φ = 614952448.

The previous prime is 660813313. The next prime is 660813347. The reversal of 660813341 is 143318066.

It can be written as a sum of positive squares in 4 ways, for example, as 1094116 + 659719225 = 1046^2 + 25685^2 .

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-660813341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 660813298 and 660813307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660813347) 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, 216866 + ... + 219891.

It is an arithmetic number, because the mean of its divisors is an integer number (88443495).

Almost surely, 2^660813341 is an apocalyptic number.

It is an amenable number.

660813341 is a deficient number, since it is larger than the sum of its proper divisors (46734619).

660813341 is a wasteful number, since it uses less digits than its factorization.

660813341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436863.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 660813341 is about 25706.2899112260. The cubic root of 660813341 is about 871.0162700181.

The spelling of 660813341 in words is "six hundred sixty million, eight hundred thirteen thousand, three hundred forty-one".