660066006701 has 8 divisors (see below), whose sum is σ = 660455782680. Its totient is φ = 659676322368.

The previous prime is 660066006659. The next prime is 660066006709. The reversal of 660066006701 is 107600660066.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20427555625 + 639638451076 = 142925^2 + 799774^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660066006701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660066006709) 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, 18672095 + ... + 18707411.

It is an arithmetic number, because the mean of its divisors is an integer number (82556972835).

Almost surely, 2^660066006701 is an apocalyptic number.

It is an amenable number.

660066006701 is a deficient number, since it is larger than the sum of its proper divisors (389775979).

660066006701 is a wasteful number, since it uses less digits than its factorization.

660066006701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45823.

The product of its (nonzero) digits is 54432, while the sum is 38.

Adding to 660066006701 its reverse (107600660066), we get a palindrome (767666666767).

The spelling of 660066006701 in words is "six hundred sixty billion, sixty-six million, six thousand, seven hundred one".