855679 has 8 divisors (see below), whose sum is σ = 943488. Its totient is φ = 769560.

The previous prime is 855671. The next prime is 855683. The reversal of 855679 is 976558.

It is a happy number.

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

It is not a de Polignac number, because 855679 - 2³ = 855671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855671) by changing a digit.

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, 814 + ... + 1540.

It is an arithmetic number, because the mean of its divisors is an integer number (117936).

2⁸⁵⁵⁶⁷⁹ is an apocalyptic number.

855679 is a deficient number, since it is larger than the sum of its proper divisors (87809).

855679 is a wasteful number, since it uses less digits than its factorization.

855679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845.

The product of its digits is 75600, while the sum is 40.

The square root of 855679 is about 925.0291887287. The cubic root of 855679 is about 94.9373178381.

The spelling of 855679 in words is "eight hundred fifty-five thousand, six hundred seventy-nine".