2646404 has 12 divisors (see below), whose sum is σ = 4645200. Its totient is φ = 1319208.

The previous prime is 2646361. The next prime is 2646409. The reversal of 2646404 is 4046462.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (2646409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 887 + ... + 2465.

It is an arithmetic number, because the mean of its divisors is an integer number (387100).

2^2646404 is an apocalyptic number.

It is an amenable number.

2646404 is a deficient number, since it is larger than the sum of its proper divisors (1998796).

2646404 is a wasteful number, since it uses less digits than its factorization.

2646404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002 (or 2000 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 2646404 is about 1626.7771820382. Note that the first 3 decimals coincide. The cubic root of 2646404 is about 138.3201277696.

The spelling of 2646404 in words is "two million, six hundred forty-six thousand, four hundred four".