665576675566 has 8 divisors (see below), whose sum is σ = 1089125469144. Its totient is φ = 302534852520.

The previous prime is 665576675473. The next prime is 665576675579.

665576675566 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×665576675566² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 665576675495 and 665576675504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15126742605 + ... + 15126742648.

It is an arithmetic number, because the mean of its divisors is an integer number (136140683643).

Almost surely, 2^665576675566 is an apocalyptic number.

665576675566 is a deficient number, since it is larger than the sum of its proper divisors (423548793578).

665576675566 is a wasteful number, since it uses less digits than its factorization.

665576675566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30253485266.

The product of its digits is 1428840000, while the sum is 70.

The spelling of 665576675566 in words is "six hundred sixty-five billion, five hundred seventy-six million, six hundred seventy-five thousand, five hundred sixty-six".