904345 has 8 divisors (see below), whose sum is σ = 1168776. Its totient is φ = 667776.

The previous prime is 904303. The next prime is 904357. The reversal of 904345 is 543409.

It can be written as a sum of positive squares in 4 ways, for example, as 35721 + 868624 = 189^2 + 932^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 904345 - 2⁷ = 904217 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6892 + ... + 7021.

It is an arithmetic number, because the mean of its divisors is an integer number (146097).

2⁹⁰⁴³⁴⁵ is an apocalyptic number.

It is an amenable number.

904345 is a deficient number, since it is larger than the sum of its proper divisors (264431).

904345 is a wasteful number, since it uses less digits than its factorization.

904345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13931.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 904345 is about 950.9705568523. The cubic root of 904345 is about 96.7040613679.

The spelling of 904345 in words is "nine hundred four thousand, three hundred forty-five".