904631 has 8 divisors (see below), whose sum is σ = 1113504. Its totient is φ = 715680.

The previous prime is 904627. The next prime is 904633. The reversal of 904631 is 136409.

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

It is not a de Polignac number, because 904631 - 2² = 904627 is a prime.

It is a super-2 number, since 2×904631² = 1636714492322, which contains 22 as substring.

It is a plaindrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 904597 and 904606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4880 + ... + 5061.

It is an arithmetic number, because the mean of its divisors is an integer number (139188).

2⁹⁰⁴⁶³¹ is an apocalyptic number.

904631 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

904631 is a deficient number, since it is larger than the sum of its proper divisors (208873).

904631 is a wasteful number, since it uses less digits than its factorization.

904631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9961.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 904631 is about 951.1209176545. The cubic root of 904631 is about 96.7142545451.

The spelling of 904631 in words is "nine hundred four thousand, six hundred thirty-one".