3995604 has 18 divisors (see below), whose sum is σ = 10100090. Its totient is φ = 1331856.

The previous prime is 3995587. The next prime is 3995609. The reversal of 3995604 is 4065993.

3995604 is a `hidden beast` number, since 3 + 99 + 560 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3992004 + 3600 = 1998^2 + 60^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 110989 = 3995604 / (3 + 9 + 9 + 5 + 6 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3995609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55459 + ... + 55530.

Almost surely, 2^3995604 is an apocalyptic number.

It is an amenable number.

3995604 is an abundant number, since it is smaller than the sum of its proper divisors (6104486).

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

3995604 is a wasteful number, since it uses less digits than its factorization.

3995604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110999 (or 110994 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 3995604 is about 1998.9006978837. The cubic root of 3995604 is about 158.6819320890.

The spelling of 3995604 in words is "three million, nine hundred ninety-five thousand, six hundred four".