680743143827 has 4 divisors (see below), whose sum is σ = 687483175056. Its totient is φ = 674003112600.

The previous prime is 680743143749. The next prime is 680743143953. The reversal of 680743143827 is 728341347086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 728341347086 = 2 ⋅364170673543.

It is a cyclic number.

It is not a de Polignac number, because 680743143827 - 2¹⁸ = 680742881683 is a prime.

It is a super-2 number, since 2×680743143827² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680743143427) 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, 3370015463 + ... + 3370015664.

It is an arithmetic number, because the mean of its divisors is an integer number (171870793764).

Almost surely, 2^680743143827 is an apocalyptic number.

680743143827 is a deficient number, since it is larger than the sum of its proper divisors (6740031229).

680743143827 is a wasteful number, since it uses less digits than its factorization.

680743143827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6740031228.

The product of its (nonzero) digits is 5419008, while the sum is 53.

The spelling of 680743143827 in words is "six hundred eighty billion, seven hundred forty-three million, one hundred forty-three thousand, eight hundred twenty-seven".