603664 has 20 divisors (see below), whose sum is σ = 1210860. Its totient is φ = 291200.

The previous prime is 603641. The next prime is 603667. The reversal of 603664 is 466306.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 102400 + 501264 = 320^2 + 708^2 .

It is not an unprimeable number, because it can be changed into a prime (603667) 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, 187 + ... + 1114.

It is an arithmetic number, because the mean of its divisors is an integer number (60543).

2⁶⁰³⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

603664 is an abundant number, since it is smaller than the sum of its proper divisors (607196).

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

603664 is a wasteful number, since it uses less digits than its factorization.

603664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338 (or 1332 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 603664 is about 776.9581713323. The cubic root of 603664 is about 84.5146036406.

The spelling of 603664 in words is "six hundred three thousand, six hundred sixty-four".