6850506409 has 4 divisors (see below), whose sum is σ = 6937221760. Its totient is φ = 6763791060.

The previous prime is 6850506379. The next prime is 6850506427. The reversal of 6850506409 is 9046050586.

6850506409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6850506409 - 2¹¹ = 6850504361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6820506409) 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, 43357557 + ... + 43357714.

It is an arithmetic number, because the mean of its divisors is an integer number (1734305440).

Almost surely, 2^6850506409 is an apocalyptic number.

It is an amenable number.

6850506409 is a deficient number, since it is larger than the sum of its proper divisors (86715351).

6850506409 is an equidigital number, since it uses as much as digits as its factorization.

6850506409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86715350.

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 6850506409 is about 82767.7860583452. The cubic root of 6850506409 is about 1899.2154109582.

The spelling of 6850506409 in words is "six billion, eight hundred fifty million, five hundred six thousand, four hundred nine".