655632682666 has 8 divisors (see below), whose sum is σ = 1059098948964. Its totient is φ = 302599699680.

The previous prime is 655632682657. The next prime is 655632682667. The reversal of 655632682666 is 666286236556.

It can be written as a sum of positive squares in 2 ways, for example, as 637738002225 + 17894680441 = 798585^2 + 133771^2 .

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

It is not an unprimeable number, because it can be changed into a prime (655632682667) 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, 12608320795 + ... + 12608320846.

Almost surely, 2^655632682666 is an apocalyptic number.

655632682666 is a deficient number, since it is larger than the sum of its proper divisors (403466266298).

655632682666 is a wasteful number, since it uses less digits than its factorization.

655632682666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25216641656.

The product of its digits is 111974400, while the sum is 61.

The spelling of 655632682666 in words is "six hundred fifty-five billion, six hundred thirty-two million, six hundred eighty-two thousand, six hundred sixty-six".