6786161 has 4 divisors (see below), whose sum is σ = 6862500. Its totient is φ = 6709824.

The previous prime is 6786149. The next prime is 6786181. The reversal of 6786161 is 1616876.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2608225 + 4177936 = 1615^2 + 2044^2 .

It is a cyclic number.

It is not a de Polignac number, because 6786161 - 2¹⁸ = 6524017 is a prime.

It is a super-2 number, since 2×6786161² = 92103962235842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6786181) 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, 38036 + ... + 38213.

It is an arithmetic number, because the mean of its divisors is an integer number (1715625).

Almost surely, 2^6786161 is an apocalyptic number.

It is an amenable number.

6786161 is a deficient number, since it is larger than the sum of its proper divisors (76339).

6786161 is an equidigital number, since it uses as much as digits as its factorization.

6786161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76338.

The product of its digits is 12096, while the sum is 35.

The square root of 6786161 is about 2605.0261035160. The cubic root of 6786161 is about 189.3250381403.

The spelling of 6786161 in words is "six million, seven hundred eighty-six thousand, one hundred sixty-one".