6875655309 has 6 divisors (see below), whose sum is σ = 9931502126. Its totient is φ = 4583770200.

The previous prime is 6875655257. The next prime is 6875655313. The reversal of 6875655309 is 9035565786.

6875655309 is a `hidden beast` number, since 6 + 87 + 5 + 6 + 553 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3590646084 + 3285009225 = 59922^2 + 57315^2 .

It is not a de Polignac number, because 6875655309 - 2⁷ = 6875655181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6875655349) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 381980842 + ... + 381980859.

Almost surely, 2^6875655309 is an apocalyptic number.

It is an amenable number.

6875655309 is a deficient number, since it is larger than the sum of its proper divisors (3055846817).

6875655309 is a wasteful number, since it uses less digits than its factorization.

6875655309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763961707 (or 763961704 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 54.

The square root of 6875655309 is about 82919.5713266778. The cubic root of 6875655309 is about 1901.5366432243.

The spelling of 6875655309 in words is "six billion, eight hundred seventy-five million, six hundred fifty-five thousand, three hundred nine".