904663 has 2 divisors, whose sum is σ = 904664. Its totient is φ = 904662.

The previous prime is 904661. The next prime is 904667. The reversal of 904663 is 366409.

It is a weak prime.

It is an emirp because it is prime and its reverse (366409) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 904663 - 2¹ = 904661 is a prime.

Together with 904661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (904661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452331 + 452332.

It is an arithmetic number, because the mean of its divisors is an integer number (452332).

2⁹⁰⁴⁶⁶³ is an apocalyptic number.

904663 is a deficient number, since it is larger than the sum of its proper divisors (1).

904663 is an equidigital number, since it uses as much as digits as its factorization.

904663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 904663 is about 951.1377397622. The cubic root of 904663 is about 96.7153949069.

It can be divided in two parts, 90 and 4663, that added together give a triangular number (4753 = T₉₇).

The spelling of 904663 in words is "nine hundred four thousand, six hundred sixty-three".