6626404 has 12 divisors (see below), whose sum is σ = 11909884. Its totient is φ = 3223584.

The previous prime is 6626381. The next prime is 6626407. The reversal of 6626404 is 4046266.

It can be written as a sum of positive squares in 2 ways, for example, as 5280804 + 1345600 = 2298^2 + 1160^2 .

It is not an unprimeable number, because it can be changed into a prime (6626407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22239 + ... + 22534.

Almost surely, 2^6626404 is an apocalyptic number.

It is an amenable number.

6626404 is a deficient number, since it is larger than the sum of its proper divisors (5283480).

6626404 is a wasteful number, since it uses less digits than its factorization.

6626404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44814 (or 44812 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 6626404 is about 2574.1802578685. The cubic root of 6626404 is about 187.8275542587.

The spelling of 6626404 in words is "six million, six hundred twenty-six thousand, four hundred four".