6601404 has 12 divisors (see below), whose sum is σ = 15403304. Its totient is φ = 2200464.

The previous prime is 6601393. The next prime is 6601411. The reversal of 6601404 is 4041066.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275047 + ... + 275070.

Almost surely, 2^6601404 is an apocalyptic number.

It is an amenable number.

6601404 is an abundant number, since it is smaller than the sum of its proper divisors (8801900).

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

6601404 is a wasteful number, since it uses less digits than its factorization.

6601404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550124 (or 550122 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 6601404 is about 2569.3197543319. The cubic root of 6601404 is about 187.5910455611.

The spelling of 6601404 in words is "six million, six hundred one thousand, four hundred four".