6806458391 has 4 divisors (see below), whose sum is σ = 6806681112. Its totient is φ = 6806235672.

The previous prime is 6806458357. The next prime is 6806458397. The reversal of 6806458391 is 1938546086.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6806458391 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 (6806458397) 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, 56516 + ... + 129641.

It is an arithmetic number, because the mean of its divisors is an integer number (1701670278).

Almost surely, 2^6806458391 is an apocalyptic number.

6806458391 is a deficient number, since it is larger than the sum of its proper divisors (222721).

6806458391 is a wasteful number, since it uses less digits than its factorization.

6806458391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222720.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 6806458391 is about 82501.2629660904. The cubic root of 6806458391 is about 1895.1360717100.

The spelling of 6806458391 in words is "six billion, eight hundred six million, four hundred fifty-eight thousand, three hundred ninety-one".