6865035840 has 168 divisors, whose sum is σ = 25429375608. Its totient is φ = 1689845760.

The previous prime is 6865035811. The next prime is 6865035857. The reversal of 6865035840 is 485305686.

6865035840 is a `hidden beast` number, since 6 + 8 + 65 + 0 + 3 + 584 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 96353856 + 6768681984 = 9816^2 + 82272^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 54241 + ... + 129120.

It is an arithmetic number, because the mean of its divisors is an integer number (151365331).

Almost surely, 2^6865035840 is an apocalyptic number.

6865035840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6865035840 is an abundant number, since it is smaller than the sum of its proper divisors (18564339768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6865035840 is a wasteful number, since it uses less digits than its factorization.

6865035840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183397 (or 183384 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 6865035840 is about 82855.5118263112. The cubic root of 6865035840 is about 1900.5571625462.

The spelling of 6865035840 in words is "six billion, eight hundred sixty-five million, thirty-five thousand, eight hundred forty".