6710643521 has 8 divisors (see below), whose sum is σ = 6787706400. Its totient is φ = 6633617760.

The previous prime is 6710643451. The next prime is 6710643547. The reversal of 6710643521 is 1253460176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6710643521 - 2²⁶ = 6643534657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6710643571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535910 + ... + 548288.

It is an arithmetic number, because the mean of its divisors is an integer number (848463300).

Almost surely, 2^6710643521 is an apocalyptic number.

It is an amenable number.

6710643521 is a deficient number, since it is larger than the sum of its proper divisors (77062879).

6710643521 is a wasteful number, since it uses less digits than its factorization.

6710643521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18559.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 6710643521 is about 81918.5175708155. The cubic root of 6710643521 is about 1886.2013717527.

The spelling of 6710643521 in words is "six billion, seven hundred ten million, six hundred forty-three thousand, five hundred twenty-one".