679404241 has 2 divisors, whose sum is σ = 679404242. Its totient is φ = 679404240.

The previous prime is 679404239. The next prime is 679404259. The reversal of 679404241 is 142404976.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 483824016 + 195580225 = 21996^2 + 13985^2 .

It is a cyclic number.

It is not a de Polignac number, because 679404241 - 2¹ = 679404239 is a prime.

Together with 679404239, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 679404241.

It is not a weakly prime, because it can be changed into another prime (679404221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339702120 + 339702121.

It is an arithmetic number, because the mean of its divisors is an integer number (339702121).

Almost surely, 2^679404241 is an apocalyptic number.

It is an amenable number.

679404241 is a deficient number, since it is larger than the sum of its proper divisors (1).

679404241 is an equidigital number, since it uses as much as digits as its factorization.

679404241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 679404241 is about 26065.3839603410. The cubic root of 679404241 is about 879.1090504902.

The spelling of 679404241 in words is "six hundred seventy-nine million, four hundred four thousand, two hundred forty-one".