306679 has 4 divisors (see below), whose sum is σ = 322840. Its totient is φ = 290520.

The previous prime is 306661. The next prime is 306689. The reversal of 306679 is 976603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 976603 = 23 ⋅42461.

It is a cyclic number.

It is not a de Polignac number, because 306679 - 2⁹ = 306167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 306679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306689) 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 3 ways as a sum of consecutive naturals, for example, 8052 + ... + 8089.

It is an arithmetic number, because the mean of its divisors is an integer number (80710).

2³⁰⁶⁶⁷⁹ is an apocalyptic number.

306679 is a deficient number, since it is larger than the sum of its proper divisors (16161).

306679 is a wasteful number, since it uses less digits than its factorization.

306679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16160.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 306679 is about 553.7860597740. The cubic root of 306679 is about 67.4364468117.

The spelling of 306679 in words is "three hundred six thousand, six hundred seventy-nine".