306485 has 4 divisors (see below), whose sum is σ = 367788. Its totient is φ = 245184.

The previous prime is 306479. The next prime is 306491. The reversal of 306485 is 584603.

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

It is an interprime number because it is at equal distance from previous prime (306479) and next prime (306491).

It can be written as a sum of positive squares in 2 ways, for example, as 96721 + 209764 = 311^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 306485 - 2⁶ = 306421 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 306485.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30644 + ... + 30653.

It is an arithmetic number, because the mean of its divisors is an integer number (91947).

2³⁰⁶⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

306485 is a deficient number, since it is larger than the sum of its proper divisors (61303).

306485 is an equidigital number, since it uses as much as digits as its factorization.

306485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61302.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 306485 is about 553.6108741707. The cubic root of 306485 is about 67.4222240899.

The spelling of 306485 in words is "three hundred six thousand, four hundred eighty-five".