6865605 has 24 divisors (see below), whose sum is σ = 12313080. Its totient is φ = 3534720.

The previous prime is 6865597. The next prime is 6865613. The reversal of 6865605 is 5065686.

6865605 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6865597) and next prime (6865613).

It can be written as a sum of positive squares in 4 ways, for example, as 1361889 + 5503716 = 1167^2 + 2346^2 .

It is not a de Polignac number, because 6865605 - 2³ = 6865597 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

6865605 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6865605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1326 + ... + 3935.

It is an arithmetic number, because the mean of its divisors is an integer number (513045).

Almost surely, 2^6865605 is an apocalyptic number.

It is an amenable number.

6865605 is a deficient number, since it is larger than the sum of its proper divisors (5447475).

6865605 is a wasteful number, since it uses less digits than its factorization.

6865605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5301 (or 5298 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 6865605 is about 2620.2299517409. The cubic root of 6865605 is about 190.0609684303.

The spelling of 6865605 in words is "six million, eight hundred sixty-five thousand, six hundred five".