3691604 has 24 divisors (see below), whose sum is σ = 7623168. Its totient is φ = 1530720.

The previous prime is 3691603. The next prime is 3691619. The reversal of 3691604 is 4061963.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3691603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1259 + ... + 2994.

It is an arithmetic number, because the mean of its divisors is an integer number (317632).

Almost surely, 2^3691604 is an apocalyptic number.

It is an amenable number.

3691604 is an abundant number, since it is smaller than the sum of its proper divisors (3931564).

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

3691604 is a wasteful number, since it uses less digits than its factorization.

3691604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4295 (or 4293 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 3691604 is about 1921.3547303921. The cubic root of 3691604 is about 154.5509584283.

The spelling of 3691604 in words is "three million, six hundred ninety-one thousand, six hundred four".