1673604 has 18 divisors (see below), whose sum is σ = 4230590. Its totient is φ = 557856.

The previous prime is 1673591. The next prime is 1673627. The reversal of 1673604 is 4063761.

It can be written as a sum of positive squares in only one way, i.e., 1368900 + 304704 = 1170^2 + 552^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23209 + ... + 23280.

2^1673604 is an apocalyptic number.

It is an amenable number.

1673604 is an abundant number, since it is smaller than the sum of its proper divisors (2556986).

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

1673604 is a wasteful number, since it uses less digits than its factorization.

1673604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46499 (or 46494 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1673604 is about 1293.6784762838. The cubic root of 1673604 is about 118.7273847977.

The spelling of 1673604 in words is "one million, six hundred seventy-three thousand, six hundred four".