680366965 has 4 divisors (see below), whose sum is σ = 816440364. Its totient is φ = 544293568.

The previous prime is 680366963. The next prime is 680366993. The reversal of 680366965 is 569663086.

680366965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 569663086 = 2 ⋅284831543.

It can be written as a sum of positive squares in 2 ways, for example, as 434222244 + 246144721 = 20838^2 + 15689^2 .

It is a cyclic number.

It is not a de Polignac number, because 680366965 - 2¹ = 680366963 is a prime.

It is a super-2 number, since 2×680366965² = 925798414126622450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680366963) 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, 68036692 + ... + 68036701.

It is an arithmetic number, because the mean of its divisors is an integer number (204110091).

Almost surely, 2^680366965 is an apocalyptic number.

It is an amenable number.

680366965 is a deficient number, since it is larger than the sum of its proper divisors (136073399).

680366965 is a wasteful number, since it uses less digits than its factorization.

680366965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136073398.

The product of its (nonzero) digits is 1399680, while the sum is 49.

The square root of 680366965 is about 26083.8449044615. The cubic root of 680366965 is about 879.5240905539.

The spelling of 680366965 in words is "six hundred eighty million, three hundred sixty-six thousand, nine hundred sixty-five".