679655 has 8 divisors (see below), whose sum is σ = 821184. Its totient is φ = 540000.

The previous prime is 679639. The next prime is 679669. The reversal of 679655 is 556976.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 679655 - 2⁴ = 679639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 530 + ... + 1280.

It is an arithmetic number, because the mean of its divisors is an integer number (102648).

2⁶⁷⁹⁶⁵⁵ is an apocalyptic number.

679655 is a deficient number, since it is larger than the sum of its proper divisors (141529).

679655 is a wasteful number, since it uses less digits than its factorization.

679655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937.

The product of its digits is 56700, while the sum is 38.

The square root of 679655 is about 824.4119116073. The cubic root of 679655 is about 87.9217192976.

The spelling of 679655 in words is "six hundred seventy-nine thousand, six hundred fifty-five".