679850 has 12 divisors (see below), whose sum is σ = 1264614. Its totient is φ = 271920.

The previous prime is 679843. The next prime is 679859. The reversal of 679850 is 58976.

It can be written as a sum of positive squares in 3 ways, for example, as 346921 + 332929 = 589^2 + 577^2 .

It is an Ulam number.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 679850.

It is not an unprimeable number, because it can be changed into a prime (679859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6749 + ... + 6848.

2⁶⁷⁹⁸⁵⁰ is an apocalyptic number.

679850 is a deficient number, since it is larger than the sum of its proper divisors (584764).

679850 is a wasteful number, since it uses less digits than its factorization.

679850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13609 (or 13604 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 679850 is about 824.5301692479. The cubic root of 679850 is about 87.9301270417.

It can be divided in two parts, 6798 and 50, that multiplied together give a triangular number (339900 = T₈₂₄).

The spelling of 679850 in words is "six hundred seventy-nine thousand, eight hundred fifty".