306673 has 4 divisors (see below), whose sum is σ = 310948. Its totient is φ = 302400.

The previous prime is 306661. The next prime is 306689. The reversal of 306673 is 376603.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82944 + 223729 = 288^2 + 473^2 .

It is a cyclic number.

It is not a de Polignac number, because 306673 - 2¹⁷ = 175601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2028 + ... + 2173.

It is an arithmetic number, because the mean of its divisors is an integer number (77737).

2³⁰⁶⁶⁷³ is an apocalyptic number.

It is an amenable number.

306673 is a deficient number, since it is larger than the sum of its proper divisors (4275).

306673 is an equidigital number, since it uses as much as digits as its factorization.

306673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274.

The product of its (nonzero) digits is 2268, while the sum is 25.

The square root of 306673 is about 553.7806424930. The cubic root of 306673 is about 67.4360070236.

It can be divided in two parts, 306 and 673, that added together give a palindrome (979).

The spelling of 306673 in words is "three hundred six thousand, six hundred seventy-three".