679668373 has 2 divisors, whose sum is σ = 679668374. Its totient is φ = 679668372.

The previous prime is 679668349. The next prime is 679668383. The reversal of 679668373 is 373866976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 458045604 + 221622769 = 21402^2 + 14887^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679668373 is a prime.

It is a super-3 number, since 3×679668373³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679668383) 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, 339834186 + 339834187.

It is an arithmetic number, because the mean of its divisors is an integer number (339834187).

Almost surely, 2^679668373 is an apocalyptic number.

It is an amenable number.

679668373 is a deficient number, since it is larger than the sum of its proper divisors (1).

679668373 is an equidigital number, since it uses as much as digits as its factorization.

679668373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6858432, while the sum is 55.

The square root of 679668373 is about 26070.4501879043. The cubic root of 679668373 is about 879.2229594776. Note that the first 3 decimals are identical.

The spelling of 679668373 in words is "six hundred seventy-nine million, six hundred sixty-eight thousand, three hundred seventy-three".