320679 has 20 divisors (see below), whose sum is σ = 496584. Its totient is φ = 206064.

The previous prime is 320669. The next prime is 320687. The reversal of 320679 is 976023.

It is not a de Polignac number, because 320679 - 2⁵ = 320647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320679.

It is not an unprimeable number, because it can be changed into a prime (320609) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2944 + ... + 3050.

2³²⁰⁶⁷⁹ is an apocalyptic number.

320679 is a deficient number, since it is larger than the sum of its proper divisors (175905).

320679 is a wasteful number, since it uses less digits than its factorization.

320679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 320679 is about 566.2852638026. The cubic root of 320679 is about 68.4473817594.

It can be divided in two parts, 320 and 679, that added together give a palindrome (999).

The spelling of 320679 in words is "three hundred twenty thousand, six hundred seventy-nine".