2606004 has 36 divisors (see below), whose sum is σ = 6639360. Its totient is φ = 861840.

The previous prime is 2605991. The next prime is 2606011. The reversal of 2606004 is 4006062.

Added to its reverse (4006062) it gives a triangular number (6612066 = T₃₆₃₆).

2606004 is a `hidden beast` number, since 2 + 60 + 600 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6687 + ... + 7065.

2^2606004 is an apocalyptic number.

It is an amenable number.

2606004 is an abundant number, since it is smaller than the sum of its proper divisors (4033356).

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

2606004 is a wasteful number, since it uses less digits than its factorization.

2606004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 575 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2606004 is about 1614.3122374559. The cubic root of 2606004 is about 137.6126503828.

Adding to 2606004 its reverse (4006062), we get a triangular number (6612066 = T₃₆₃₆).

The spelling of 2606004 in words is "two million, six hundred six thousand, four".