2604406 has 16 divisors (see below), whose sum is σ = 4700160. Its totient is φ = 1057320.

The previous prime is 2604401. The next prime is 2604431. The reversal of 2604406 is 6044062.

It is a super-2 number, since 2×2604406² = 13565861225672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2604401) 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, 4630 + ... + 5161.

It is an arithmetic number, because the mean of its divisors is an integer number (293760).

2^2604406 is an apocalyptic number.

2604406 is a deficient number, since it is larger than the sum of its proper divisors (2095754).

2604406 is a wasteful number, since it uses less digits than its factorization.

2604406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9819.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2604406 is about 1613.8172139372. The cubic root of 2604406 is about 137.5845166349.

Adding to 2604406 its reverse (6044062), we get a palindrome (8648468).

The spelling of 2604406 in words is "two million, six hundred four thousand, four hundred six".