679921353 has 6 divisors (see below), whose sum is σ = 982108634. Its totient is φ = 453280896.

The previous prime is 679921351. The next prime is 679921373. The reversal of 679921353 is 353129976.

It can be written as a sum of positive squares in only one way, i.e., 617621904 + 62299449 = 24852^2 + 7893^2 .

It is not a de Polignac number, because 679921353 - 2¹ = 679921351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 679921299 and 679921308.

It is not an unprimeable number, because it can be changed into a prime (679921351) 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 in 5 ways as a sum of consecutive naturals, for example, 37773400 + ... + 37773417.

Almost surely, 2^679921353 is an apocalyptic number.

It is an amenable number.

679921353 is a deficient number, since it is larger than the sum of its proper divisors (302187281).

679921353 is a wasteful number, since it uses less digits than its factorization.

679921353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75546823 (or 75546820 counting only the distinct ones).

The product of its digits is 306180, while the sum is 45.

The square root of 679921353 is about 26075.3015898187. The cubic root of 679921353 is about 879.3320314125.

The spelling of 679921353 in words is "six hundred seventy-nine million, nine hundred twenty-one thousand, three hundred fifty-three".