665062260566 has 16 divisors (see below), whose sum is σ = 1091513039760. Its totient is φ = 301403988480.

The previous prime is 665062260547. The next prime is 665062260581.

665062260566 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44844371 + ... + 44859198.

It is an arithmetic number, because the mean of its divisors is an integer number (68219564985).

Almost surely, 2^665062260566 is an apocalyptic number.

665062260566 is a deficient number, since it is larger than the sum of its proper divisors (426450779194).

665062260566 is a wasteful number, since it uses less digits than its factorization.

665062260566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89703919.

The product of its (nonzero) digits is 4665600, while the sum is 50.

The spelling of 665062260566 in words is "six hundred sixty-five billion, sixty-two million, two hundred sixty thousand, five hundred sixty-six".