6709570561 has 4 divisors (see below), whose sum is σ = 6710886400. Its totient is φ = 6708254724.

The previous prime is 6709570559. The next prime is 6709570577. The reversal of 6709570561 is 1650759076.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6709570561 - 2¹ = 6709570559 is a prime.

It is a super-2 number, since 2×6709570561² = 90036674226075709442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6709570531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650241 + ... + 660478.

It is an arithmetic number, because the mean of its divisors is an integer number (1677721600).

Almost surely, 2^6709570561 is an apocalyptic number.

It is an amenable number.

6709570561 is a deficient number, since it is larger than the sum of its proper divisors (1315839).

6709570561 is a wasteful number, since it uses less digits than its factorization.

6709570561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315838.

The product of its (nonzero) digits is 396900, while the sum is 46.

The square root of 6709570561 is about 81911.9683623828. The cubic root of 6709570561 is about 1886.1008385977.

The spelling of 6709570561 in words is "six billion, seven hundred nine million, five hundred seventy thousand, five hundred sixty-one".