679538611901 has 2 divisors, whose sum is σ = 679538611902. Its totient is φ = 679538611900.

The previous prime is 679538611889. The next prime is 679538611903. The reversal of 679538611901 is 109116835976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 612392328025 + 67146283876 = 782555^2 + 259126^2 .

It is a cyclic number.

It is not a de Polignac number, because 679538611901 - 2¹⁴ = 679538595517 is a prime.

Together with 679538611903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679538611903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339769305950 + 339769305951.

It is an arithmetic number, because the mean of its divisors is an integer number (339769305951).

Almost surely, 2^679538611901 is an apocalyptic number.

It is an amenable number.

679538611901 is a deficient number, since it is larger than the sum of its proper divisors (1).

679538611901 is an equidigital number, since it uses as much as digits as its factorization.

679538611901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2449440, while the sum is 56.

The spelling of 679538611901 in words is "six hundred seventy-nine billion, five hundred thirty-eight million, six hundred eleven thousand, nine hundred one".