2645404 has 12 divisors (see below), whose sum is σ = 4901904. Its totient is φ = 1244864.

The previous prime is 2645399. The next prime is 2645413. The reversal of 2645404 is 4045462.

2645404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19384 + ... + 19519.

It is an arithmetic number, because the mean of its divisors is an integer number (408492).

2^2645404 is an apocalyptic number.

It is an amenable number.

2645404 is a deficient number, since it is larger than the sum of its proper divisors (2256500).

2645404 is a wasteful number, since it uses less digits than its factorization.

2645404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38924 (or 38922 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2645404 is about 1626.4697968299. The cubic root of 2645404 is about 138.3027031746.

The spelling of 2645404 in words is "two million, six hundred forty-five thousand, four hundred four".