680667853 has 2 divisors, whose sum is σ = 680667854. Its totient is φ = 680667852.

The previous prime is 680667839. The next prime is 680667863. The reversal of 680667853 is 358766086.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 607770409 + 72897444 = 24653^2 + 8538^2 .

It is a cyclic number.

It is not a de Polignac number, because 680667853 - 2⁵ = 680667821 is a prime.

It is a super-2 number, since 2×680667853² = 926617452215259218, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 680667797 and 680667806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680667863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340333926 + 340333927.

It is an arithmetic number, because the mean of its divisors is an integer number (340333927).

Almost surely, 2^680667853 is an apocalyptic number.

It is an amenable number.

680667853 is a deficient number, since it is larger than the sum of its proper divisors (1).

680667853 is an equidigital number, since it uses as much as digits as its factorization.

680667853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 680667853 is about 26089.6119748838. The cubic root of 680667853 is about 879.6537261065.

The spelling of 680667853 in words is "six hundred eighty million, six hundred sixty-seven thousand, eight hundred fifty-three".