603904 has 36 divisors (see below), whose sum is σ = 1381744. Its totient is φ = 258048.

The previous prime is 603901. The next prime is 603907. The reversal of 603904 is 409306.

It is an interprime number because it is at equal distance from previous prime (603901) and next prime (603907).

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (603901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1624 + ... + 1960.

2⁶⁰³⁹⁰⁴ is an apocalyptic number.

603904 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 603904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (690872).

603904 is an abundant number, since it is smaller than the sum of its proper divisors (777840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

603904 is an equidigital number, since it uses as much as digits as its factorization.

603904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 603904 is about 777.1126044532. The cubic root of 603904 is about 84.5258023744.

The spelling of 603904 in words is "six hundred three thousand, nine hundred four".