6700566561 has 8 divisors (see below), whose sum is σ = 9621326400. Its totient is φ = 4123425552.

The previous prime is 6700566529. The next prime is 6700566569. The reversal of 6700566561 is 1656650076.

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

It is not a de Polignac number, because 6700566561 - 2⁵ = 6700566529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6700566569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85904661 + ... + 85904738.

It is an arithmetic number, because the mean of its divisors is an integer number (1202665800).

Almost surely, 2^6700566561 is an apocalyptic number.

It is an amenable number.

6700566561 is a deficient number, since it is larger than the sum of its proper divisors (2920759839).

6700566561 is a wasteful number, since it uses less digits than its factorization.

6700566561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171809415.

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 6700566561 is about 81856.9884676928. The cubic root of 6700566561 is about 1885.2567679737.

The spelling of 6700566561 in words is "six billion, seven hundred million, five hundred sixty-six thousand, five hundred sixty-one".