679775 has 6 divisors (see below), whose sum is σ = 842952. Its totient is φ = 543800.

The previous prime is 679753. The next prime is 679781. The reversal of 679775 is 577976.

It is not a de Polignac number, because 679775 - 2⁸ = 679519 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13571 + ... + 13620.

It is an arithmetic number, because the mean of its divisors is an integer number (140492).

2⁶⁷⁹⁷⁷⁵ is an apocalyptic number.

679775 is a deficient number, since it is larger than the sum of its proper divisors (163177).

679775 is a wasteful number, since it uses less digits than its factorization.

679775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27201 (or 27196 counting only the distinct ones).

The product of its digits is 92610, while the sum is 41.

The square root of 679775 is about 824.4846875473. The cubic root of 679775 is about 87.9268934843.

The spelling of 679775 in words is "six hundred seventy-nine thousand, seven hundred seventy-five".