6606405 has 48 divisors (see below), whose sum is σ = 12894336. Its totient is φ = 3104640.

The previous prime is 6606389. The next prime is 6606409. The reversal of 6606405 is 5046066.

6606405 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6606405 - 2⁴ = 6606389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6606409) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 13210 + ... + 13700.

It is an arithmetic number, because the mean of its divisors is an integer number (268632).

Almost surely, 2^6606405 is an apocalyptic number.

6606405 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6606405 is a deficient number, since it is larger than the sum of its proper divisors (6287931).

6606405 is a wasteful number, since it uses less digits than its factorization.

6606405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 6606405 is about 2570.2927848788. The cubic root of 6606405 is about 187.6384044773.

The spelling of 6606405 in words is "six million, six hundred six thousand, four hundred five".