6806865 has 32 divisors (see below), whose sum is σ = 11926656. Its totient is φ = 3294720.

The previous prime is 6806837. The next prime is 6806893. The reversal of 6806865 is 5686086.

It is an interprime number because it is at equal distance from previous prime (6806837) and next prime (6806893).

It is not a de Polignac number, because 6806865 - 2⁶ = 6806801 is a prime.

It is a super-2 number, since 2×6806865² = 92666822256450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12805 + ... + 13325.

It is an arithmetic number, because the mean of its divisors is an integer number (372708).

Almost surely, 2^6806865 is an apocalyptic number.

6806865 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6806865 is a deficient number, since it is larger than the sum of its proper divisors (5119791).

6806865 is a wasteful number, since it uses less digits than its factorization.

6806865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 6806865 is about 2608.9969336893. The cubic root of 6806865 is about 189.5173808616.

The spelling of 6806865 in words is "six million, eight hundred six thousand, eight hundred sixty-five".