2663604 has 30 divisors (see below), whose sum is σ = 6964034. Its totient is φ = 887760.

The previous prime is 2663603. The next prime is 2663627. The reversal of 2663604 is 4063662.

2663604 is a `hidden beast` number, since 26 + 636 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2624400 + 39204 = 1620^2 + 198^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2663603) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3787 + ... + 4434.

2^2663604 is an apocalyptic number.

It is an amenable number.

2663604 is an abundant number, since it is smaller than the sum of its proper divisors (4300430).

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

2663604 is a wasteful number, since it uses less digits than its factorization.

2663604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8237 (or 8226 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 2663604 is about 1632.0551461271. The cubic root of 2663604 is about 138.6191461716.

The spelling of 2663604 in words is "two million, six hundred sixty-three thousand, six hundred four".