6856761 has 4 divisors (see below), whose sum is σ = 9142352. Its totient is φ = 4571172.

The previous prime is 6856757. The next prime is 6856771. The reversal of 6856761 is 1676586.

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 not a de Polignac number, because 6856761 - 2² = 6856757 is a prime.

It is a super-2 number, since 2×6856761² = 94030342822242, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

6856761 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6856771) 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, 1142791 + ... + 1142796.

It is an arithmetic number, because the mean of its divisors is an integer number (2285588).

Almost surely, 2^6856761 is an apocalyptic number.

It is an amenable number.

6856761 is a deficient number, since it is larger than the sum of its proper divisors (2285591).

6856761 is a wasteful number, since it uses less digits than its factorization.

6856761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285590.

The product of its digits is 60480, while the sum is 39.

The square root of 6856761 is about 2618.5417697642. The cubic root of 6856761 is about 189.9793236965.

The spelling of 6856761 in words is "six million, eight hundred fifty-six thousand, seven hundred sixty-one".