678970801 has 2 divisors, whose sum is σ = 678970802. Its totient is φ = 678970800.

The previous prime is 678970777. The next prime is 678970819. The reversal of 678970801 is 108079876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377913600 + 301057201 = 19440^2 + 17351^2 .

It is a cyclic number.

It is not a de Polignac number, because 678970801 - 2²³ = 670582193 is a prime.

It is a super-2 number, since 2×678970801² = 922002697221163202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (672970801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339485400 + 339485401.

It is an arithmetic number, because the mean of its divisors is an integer number (339485401).

Almost surely, 2^678970801 is an apocalyptic number.

It is an amenable number.

678970801 is a deficient number, since it is larger than the sum of its proper divisors (1).

678970801 is an equidigital number, since it uses as much as digits as its factorization.

678970801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 678970801 is about 26057.0681581793. The cubic root of 678970801 is about 878.9220621144.

The spelling of 678970801 in words is "six hundred seventy-eight million, nine hundred seventy thousand, eight hundred one".