680146589 has 2 divisors, whose sum is σ = 680146590. Its totient is φ = 680146588.

The previous prime is 680146583. The next prime is 680146613. The reversal of 680146589 is 985641086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 612166564 + 67980025 = 24742^2 + 8245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680146589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680146583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340073294 + 340073295.

It is an arithmetic number, because the mean of its divisors is an integer number (340073295).

Almost surely, 2^680146589 is an apocalyptic number.

It is an amenable number.

680146589 is a deficient number, since it is larger than the sum of its proper divisors (1).

680146589 is an equidigital number, since it uses as much as digits as its factorization.

680146589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 680146589 is about 26079.6201851177. The cubic root of 680146589 is about 879.4291187999.

The spelling of 680146589 in words is "six hundred eighty million, one hundred forty-six thousand, five hundred eighty-nine".