6856929 has 12 divisors (see below), whose sum is σ = 10426000. Its totient is φ = 4330584.

The previous prime is 6856919. The next prime is 6856931. The reversal of 6856929 is 9296586.

6856929 is a `hidden beast` number, since 68 + 569 + 29 = 666.

It is not a de Polignac number, because 6856929 - 2⁵ = 6856897 is a prime.

It is a super-2 number, since 2×6856929² = 94034950622082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

6856929 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6856919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19879 + ... + 20220.

Almost surely, 2^6856929 is an apocalyptic number.

It is an amenable number.

6856929 is a deficient number, since it is larger than the sum of its proper divisors (3569071).

6856929 is a wasteful number, since it uses less digits than its factorization.

6856929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40124 (or 40121 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 6856929 is about 2618.5738484908. The cubic root of 6856929 is about 189.9808752680.

The spelling of 6856929 in words is "six million, eight hundred fifty-six thousand, nine hundred twenty-nine".