305673 has 4 divisors (see below), whose sum is σ = 407568. Its totient is φ = 203780.

The previous prime is 305663. The next prime is 305717. The reversal of 305673 is 376503.

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 305673 - 2¹² = 301577 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (305603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50943 + ... + 50948.

It is an arithmetic number, because the mean of its divisors is an integer number (101892).

2³⁰⁵⁶⁷³ is an apocalyptic number.

It is an amenable number.

305673 is a deficient number, since it is larger than the sum of its proper divisors (101895).

305673 is a wasteful number, since it uses less digits than its factorization.

305673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101894.

The product of its (nonzero) digits is 1890, while the sum is 24.

The square root of 305673 is about 552.8770206836. The cubic root of 305673 is about 67.3626287145.

The spelling of 305673 in words is "three hundred five thousand, six hundred seventy-three".