306713 has 4 divisors (see below), whose sum is σ = 334608. Its totient is φ = 278820.

The previous prime is 306707. The next prime is 306727. The reversal of 306713 is 317603.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 306713 - 2⁸ = 306457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (306703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13931 + ... + 13952.

It is an arithmetic number, because the mean of its divisors is an integer number (83652).

2³⁰⁶⁷¹³ is an apocalyptic number.

It is an amenable number.

306713 is a deficient number, since it is larger than the sum of its proper divisors (27895).

306713 is a wasteful number, since it uses less digits than its factorization.

306713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27894.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 306713 is about 553.8167566985. The cubic root of 306713 is about 67.4389388359.

The spelling of 306713 in words is "three hundred six thousand, seven hundred thirteen".