904621 has 8 divisors (see below), whose sum is σ = 967680. Its totient is φ = 842688.

The previous prime is 904619. The next prime is 904627. The reversal of 904621 is 126409.

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 904621 - 2¹ = 904619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 904592 and 904601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1950 + ... + 2368.

It is an arithmetic number, because the mean of its divisors is an integer number (120960).

2⁹⁰⁴⁶²¹ is an apocalyptic number.

It is an amenable number.

904621 is a deficient number, since it is larger than the sum of its proper divisors (63059).

904621 is a wasteful number, since it uses less digits than its factorization.

904621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 904621 is about 951.1156606849. The cubic root of 904621 is about 96.7138981766.

The spelling of 904621 in words is "nine hundred four thousand, six hundred twenty-one".