6065600661 has 12 divisors (see below), whose sum is σ = 8998218892. Its totient is φ = 3934443456.

The previous prime is 6065600657. The next prime is 6065600677. The reversal of 6065600661 is 1660065606.

It can be written as a sum of positive squares in 2 ways, for example, as 4546939761 + 1518660900 = 67431^2 + 38970^2 .

It is not a de Polignac number, because 6065600661 - 2² = 6065600657 is a prime.

It is a super-3 number, since 3×6065600661³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6065600161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9107176 + ... + 9107841.

Almost surely, 2^6065600661 is an apocalyptic number.

It is an amenable number.

6065600661 is a deficient number, since it is larger than the sum of its proper divisors (2932618231).

6065600661 is a wasteful number, since it uses less digits than its factorization.

6065600661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18215060 (or 18215057 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 6065600661 is about 77881.9662116976. The cubic root of 6065600661 is about 1823.7190647149.

The spelling of 6065600661 in words is "six billion, sixty-five million, six hundred thousand, six hundred sixty-one".