305706 has 8 divisors (see below), whose sum is σ = 611424. Its totient is φ = 101900.

The previous prime is 305663. The next prime is 305717. The reversal of 305706 is 607503.

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

305706 is an admirable number.

It is an unprimeable number.

305706 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25470 + ... + 25481.

It is an arithmetic number, because the mean of its divisors is an integer number (76428).

2³⁰⁵⁷⁰⁶ is an apocalyptic number.

305706 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305706 is a wasteful number, since it uses less digits than its factorization.

305706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50956.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 305706 is about 552.9068637664. The cubic root of 305706 is about 67.3650527501.

The spelling of 305706 in words is "three hundred five thousand, seven hundred six".