678344453 has 2 divisors, whose sum is σ = 678344454. Its totient is φ = 678344452.

The previous prime is 678344413. The next prime is 678344477. The reversal of 678344453 is 354443876.

678344453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 623850529 + 54493924 = 24977^2 + 7382^2 .

It is a cyclic number.

It is not a de Polignac number, because 678344453 - 2⁶ = 678344389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678344413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339172226 + 339172227.

It is an arithmetic number, because the mean of its divisors is an integer number (339172227).

Almost surely, 2^678344453 is an apocalyptic number.

It is an amenable number.

678344453 is a deficient number, since it is larger than the sum of its proper divisors (1).

678344453 is an equidigital number, since it uses as much as digits as its factorization.

678344453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 44.

The square root of 678344453 is about 26045.0466115920. The cubic root of 678344453 is about 878.6517115372.

The spelling of 678344453 in words is "six hundred seventy-eight million, three hundred forty-four thousand, four hundred fifty-three".