679646313 has 6 divisors (see below), whose sum is σ = 981711354. Its totient is φ = 453097536.

The previous prime is 679646237. The next prime is 679646327. The reversal of 679646313 is 313646976.

679646313 is a `hidden beast` number, since 6 + 7 + 9 + 6 + 4 + 631 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 644753664 + 34892649 = 25392^2 + 5907^2 .

It is not a de Polignac number, because 679646313 - 2¹⁸ = 679384169 is a prime.

It is a super-2 number, since 2×679646313² = 923838221548987938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (679646333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37758120 + ... + 37758137.

It is an arithmetic number, because the mean of its divisors is an integer number (163618559).

Almost surely, 2^679646313 is an apocalyptic number.

It is an amenable number.

679646313 is a deficient number, since it is larger than the sum of its proper divisors (302065041).

679646313 is a wasteful number, since it uses less digits than its factorization.

679646313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75516263 (or 75516260 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 679646313 is about 26070.0271001010. The cubic root of 679646313 is about 879.2134470599.

The spelling of 679646313 in words is "six hundred seventy-nine million, six hundred forty-six thousand, three hundred thirteen".