2604995 has 16 divisors (see below), whose sum is σ = 3486240. Its totient is φ = 1857024.

The previous prime is 2604977. The next prime is 2604997. The reversal of 2604995 is 5994062.

It is a Cunningham number, because it is equal to 1614²-1.

It is a cyclic number.

It is not a de Polignac number, because 2604995 - 2⁸ = 2604739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2604997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 809 + ... + 2421.

It is an arithmetic number, because the mean of its divisors is an integer number (217890).

2^2604995 is an apocalyptic number.

2604995 is a deficient number, since it is larger than the sum of its proper divisors (881245).

2604995 is a wasteful number, since it uses less digits than its factorization.

2604995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 2604995 is about 1613.9996902106. Note that the first 3 decimals coincide. The cubic root of 2604995 is about 137.5948876717.

The spelling of 2604995 in words is "two million, six hundred four thousand, nine hundred ninety-five".