680146613 has 2 divisors, whose sum is σ = 680146614. Its totient is φ = 680146612.

The previous prime is 680146589. The next prime is 680146619. The reversal of 680146613 is 316641086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 612216049 + 67930564 = 24743^2 + 8242^2 .

It is a cyclic number.

It is not a de Polignac number, because 680146613 - 2⁶ = 680146549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680146619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340073306 + 340073307.

It is an arithmetic number, because the mean of its divisors is an integer number (340073307).

Almost surely, 2^680146613 is an apocalyptic number.

It is an amenable number.

680146613 is a deficient number, since it is larger than the sum of its proper divisors (1).

680146613 is an equidigital number, since it uses as much as digits as its factorization.

680146613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 680146613 is about 26079.6206452471. The cubic root of 680146613 is about 879.4291291439.

Adding to 680146613 its reverse (316641086), we get a palindrome (996787699).

The spelling of 680146613 in words is "six hundred eighty million, one hundred forty-six thousand, six hundred thirteen".