606561651656 has 16 divisors (see below), whose sum is σ = 1138511722140. Its totient is φ = 302958525760.

The previous prime is 606561651649. The next prime is 606561651677. The reversal of 606561651656 is 656156165606.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 536248644100 + 70313007556 = 732290^2 + 265166^2 .

It is a junction number, because it is equal to n+sod(n) for n = 606561651598 and 606561651607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40279511 + ... + 40294566.

Almost surely, 2^606561651656 is an apocalyptic number.

It is an amenable number.

606561651656 is a deficient number, since it is larger than the sum of its proper divisors (531950070484).

606561651656 is a wasteful number, since it uses less digits than its factorization.

606561651656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80575024 (or 80575020 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 53.

The spelling of 606561651656 in words is "six hundred six billion, five hundred sixty-one million, six hundred fifty-one thousand, six hundred fifty-six".