680453 has 2 divisors, whose sum is σ = 680454. Its totient is φ = 680452.

The previous prime is 680443. The next prime is 680489. The reversal of 680453 is 354086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 643204 + 37249 = 802^2 + 193^2 .

It is a cyclic number.

It is not a de Polignac number, because 680453 - 2¹⁶ = 614917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340226 + 340227.

It is an arithmetic number, because the mean of its divisors is an integer number (340227).

2⁶⁸⁰⁴⁵³ is an apocalyptic number.

It is an amenable number.

680453 is a deficient number, since it is larger than the sum of its proper divisors (1).

680453 is an equidigital number, since it uses as much as digits as its factorization.

680453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 680453 is about 824.8957509892. The cubic root of 680453 is about 87.9561162051.

The spelling of 680453 in words is "six hundred eighty thousand, four hundred fifty-three".