6209124805 has 16 divisors (see below), whose sum is σ = 8028027504. Its totient is φ = 4582955520.

The previous prime is 6209124797. The next prime is 6209124809. The reversal of 6209124805 is 5084219026.

6209124805 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 78798²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 286591041 + 5922533764 = 16929^2 + 76958^2 .

It is not a de Polignac number, because 6209124805 - 2³ = 6209124797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6209124809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116857 + ... + 161473.

It is an arithmetic number, because the mean of its divisors is an integer number (501751719).

Almost surely, 2^6209124805 is an apocalyptic number.

6209124805 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6209124805 is a deficient number, since it is larger than the sum of its proper divisors (1818902699).

6209124805 is a wasteful number, since it uses less digits than its factorization.

6209124805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46776.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 6209124805 is about 78798.0000063453. Note that the first 5 decimals coincide. The cubic root of 6209124805 is about 1837.9913498046.

The spelling of 6209124805 in words is "six billion, two hundred nine million, one hundred twenty-four thousand, eight hundred five".