606640442000 has 40 divisors (see below), whose sum is σ = 1466856593592. Its totient is φ = 242656176000.

The previous prime is 606640441991. The next prime is 606640442003. The reversal of 606640442000 is 244046606.

It can be written as a sum of positive squares in 4 ways, for example, as 808606096 + 605831835904 = 28436^2 + 778352^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (606640442003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151658111 + ... + 151662110.

Almost surely, 2^606640442000 is an apocalyptic number.

It is an amenable number.

606640442000 is an abundant number, since it is smaller than the sum of its proper divisors (860216151592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

606640442000 is a wasteful number, since it uses less digits than its factorization.

606640442000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303320244 (or 303320228 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 606640442000 its reverse (244046606), we get a palindrome (606884488606).

The spelling of 606640442000 in words is "six hundred six billion, six hundred forty million, four hundred forty-two thousand".