680065951 has 2 divisors, whose sum is σ = 680065952. Its totient is φ = 680065950.

The previous prime is 680065931. The next prime is 680065961. The reversal of 680065951 is 159560086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 680065951 - 2²³ = 671677343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680065901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340032975 + 340032976.

It is an arithmetic number, because the mean of its divisors is an integer number (340032976).

Almost surely, 2^680065951 is an apocalyptic number.

680065951 is a deficient number, since it is larger than the sum of its proper divisors (1).

680065951 is an equidigital number, since it uses as much as digits as its factorization.

680065951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 680065951 is about 26078.0741428503. The cubic root of 680065951 is about 879.3943624649.

The spelling of 680065951 in words is "six hundred eighty million, sixty-five thousand, nine hundred fifty-one".