679626 has 24 divisors (see below), whose sum is σ = 1559844. Its totient is φ = 213120.

The previous prime is 679607. The next prime is 679633. The reversal of 679626 is 626976.

It can be written as a sum of positive squares in 2 ways, for example, as 641601 + 38025 = 801^2 + 195^2 .

It is an unprimeable number.

679626 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 11 ways as a sum of consecutive naturals, for example, 805 + ... + 1416.

2⁶⁷⁹⁶²⁶ is an apocalyptic number.

679626 is an abundant number, since it is smaller than the sum of its proper divisors (880218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679626 is a wasteful number, since it uses less digits than its factorization.

679626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246 (or 2243 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 679626 is about 824.3943231246. The cubic root of 679626 is about 87.9204687778.

Subtracting from 679626 its reverse (626976), we obtain a triangular number (52650 = T₃₂₄).

The spelling of 679626 in words is "six hundred seventy-nine thousand, six hundred twenty-six".