6809157 has 16 divisors (see below), whose sum is σ = 10335360. Its totient is φ = 4428000.

The previous prime is 6809149. The next prime is 6809167. The reversal of 6809157 is 7519086.

It is not a de Polignac number, because 6809157 - 2³ = 6809149 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6809137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1969 + ... + 4182.

It is an arithmetic number, because the mean of its divisors is an integer number (645960).

Almost surely, 2^6809157 is an apocalyptic number.

It is an amenable number.

6809157 is a deficient number, since it is larger than the sum of its proper divisors (3526203).

6809157 is a wasteful number, since it uses less digits than its factorization.

6809157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6201 (or 6195 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 6809157 is about 2609.4361459902. The cubic root of 6809157 is about 189.5386498350.

The spelling of 6809157 in words is "six million, eight hundred nine thousand, one hundred fifty-seven".