6864521575 has 12 divisors (see below), whose sum is σ = 8672612328. Its totient is φ = 5388000800.

The previous prime is 6864521569. The next prime is 6864521593. The reversal of 6864521575 is 5751254686.

It is not a de Polignac number, because 6864521575 - 2²¹ = 6862424423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2589061 + ... + 2591710.

It is an arithmetic number, because the mean of its divisors is an integer number (722717694).

Almost surely, 2^6864521575 is an apocalyptic number.

6864521575 is a deficient number, since it is larger than the sum of its proper divisors (1808090753).

6864521575 is a wasteful number, since it uses less digits than its factorization.

6864521575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5180834 (or 5180829 counting only the distinct ones).

The product of its digits is 2016000, while the sum is 49.

The square root of 6864521575 is about 82852.4083838243. The cubic root of 6864521575 is about 1900.5097039721.

The spelling of 6864521575 in words is "six billion, eight hundred sixty-four million, five hundred twenty-one thousand, five hundred seventy-five".