678858097 has 2 divisors, whose sum is σ = 678858098. Its totient is φ = 678858096.

The previous prime is 678858077. The next prime is 678858151. The reversal of 678858097 is 790858876.

678858097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371872656 + 306985441 = 19284^2 + 17521^2 .

It is a cyclic number.

It is not a de Polignac number, because 678858097 - 2¹¹ = 678856049 is a prime.

It is a super-2 number, since 2×678858097² = 921696631724922818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (678858077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339429048 + 339429049.

It is an arithmetic number, because the mean of its divisors is an integer number (339429049).

Almost surely, 2^678858097 is an apocalyptic number.

It is an amenable number.

678858097 is a deficient number, since it is larger than the sum of its proper divisors (1).

678858097 is an equidigital number, since it uses as much as digits as its factorization.

678858097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6773760, while the sum is 58.

The square root of 678858097 is about 26054.9054306478. The cubic root of 678858097 is about 878.8734279594.

The spelling of 678858097 in words is "six hundred seventy-eight million, eight hundred fifty-eight thousand, ninety-seven".