6765660566 has 16 divisors (see below), whose sum is σ = 11717847456. Its totient is φ = 2869675776.

The previous prime is 6765660557. The next prime is 6765660593. The reversal of 6765660566 is 6650665676.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2489681 + ... + 2492396.

It is an arithmetic number, because the mean of its divisors is an integer number (732365466).

Almost surely, 2^6765660566 is an apocalyptic number.

6765660566 is a deficient number, since it is larger than the sum of its proper divisors (4952186890).

6765660566 is a wasteful number, since it uses less digits than its factorization.

6765660566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4982183.

The product of its (nonzero) digits is 8164800, while the sum is 53.

The square root of 6765660566 is about 82253.6355792253. The cubic root of 6765660566 is about 1891.3420072233.

The spelling of 6765660566 in words is "six billion, seven hundred sixty-five million, six hundred sixty thousand, five hundred sixty-six".