73604 has 6 divisors (see below), whose sum is σ = 128814. Its totient is φ = 36800.

The previous prime is 73597. The next prime is 73607. The reversal of 73604 is 40637.

It can be written as a sum of positive squares in only one way, i.e., 61504 + 12100 = 248^2 + 110^2 .

It is a d-powerful number, because it can be written as 7² + 3⁵ + 6⁵ + 0 + 4⁸ .

It is not an unprimeable number, because it can be changed into a prime (73607) by changing a digit.

73604 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, 9197 + ... + 9204.

It is an arithmetic number, because the mean of its divisors is an integer number (21469).

2⁷³⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

73604 is a deficient number, since it is larger than the sum of its proper divisors (55210).

73604 is a wasteful number, since it uses less digits than its factorization.

73604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18405 (or 18403 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 73604 is about 271.3005713227. The cubic root of 73604 is about 41.9083413084.

The spelling of 73604 in words is "seventy-three thousand, six hundred four".