679654019953 has 2 divisors, whose sum is σ = 679654019954. Its totient is φ = 679654019952.

The previous prime is 679654019951. The next prime is 679654019959. The reversal of 679654019953 is 359910456976.

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., 464588102449 + 215065917504 = 681607^2 + 463752^2 .

It is a cyclic number.

It is not a de Polignac number, because 679654019953 - 2¹ = 679654019951 is a prime.

Together with 679654019951, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (679654019951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339827009976 + 339827009977.

It is an arithmetic number, because the mean of its divisors is an integer number (339827009977).

Almost surely, 2^679654019953 is an apocalyptic number.

It is an amenable number.

679654019953 is a deficient number, since it is larger than the sum of its proper divisors (1).

679654019953 is an equidigital number, since it uses as much as digits as its factorization.

679654019953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55112400, while the sum is 64.

The spelling of 679654019953 in words is "six hundred seventy-nine billion, six hundred fifty-four million, nineteen thousand, nine hundred fifty-three".