679868401 has 2 divisors, whose sum is σ = 679868402. Its totient is φ = 679868400.

The previous prime is 679868383. The next prime is 679868443. The reversal of 679868401 is 104868976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 675948001 + 3920400 = 25999^2 + 1980^2 .

It is a cyclic number.

It is not a de Polignac number, because 679868401 - 2¹⁷ = 679737329 is a prime.

It is not a weakly prime, because it can be changed into another prime (679868461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339934200 + 339934201.

It is an arithmetic number, because the mean of its divisors is an integer number (339934201).

Almost surely, 2^679868401 is an apocalyptic number.

It is an amenable number.

679868401 is a deficient number, since it is larger than the sum of its proper divisors (1).

679868401 is an equidigital number, since it uses as much as digits as its factorization.

679868401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 679868401 is about 26074.2862030775. The cubic root of 679868401 is about 879.3092034789.

The spelling of 679868401 in words is "six hundred seventy-nine million, eight hundred sixty-eight thousand, four hundred one".