993604 has 6 divisors (see below), whose sum is σ = 1738814. Its totient is φ = 496800.

The previous prime is 993589. The next prime is 993611. The reversal of 993604 is 406399.

It can be written as a sum of positive squares in only one way, i.e., 688900 + 304704 = 830^2 + 552^2 .

It is an unprimeable number.

993604 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124197 + ... + 124204.

2⁹⁹³⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

993604 is a deficient number, since it is larger than the sum of its proper divisors (745210).

993604 is a wasteful number, since it uses less digits than its factorization.

993604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248405 (or 248403 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 993604 is about 996.7968699790. The cubic root of 993604 is about 99.7863438355.

The spelling of 993604 in words is "nine hundred ninety-three thousand, six hundred four".