6129805 has 16 divisors (see below), whose sum is σ = 8164800. Its totient is φ = 4380160.

The previous prime is 6129803. The next prime is 6129811. The reversal of 6129805 is 5089216.

It is not a de Polignac number, because 6129805 - 2¹ = 6129803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6129803) 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 15 ways as a sum of consecutive naturals, for example, 2301 + ... + 4189.

It is an arithmetic number, because the mean of its divisors is an integer number (510300).

Almost surely, 2^6129805 is an apocalyptic number.

It is an amenable number.

6129805 is a deficient number, since it is larger than the sum of its proper divisors (2034995).

6129805 is a wasteful number, since it uses less digits than its factorization.

6129805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 6129805 is about 2475.8443004357. The cubic root of 6129805 is about 183.0131177952.

The spelling of 6129805 in words is "six million, one hundred twenty-nine thousand, eight hundred five".