66662435607 has 16 divisors (see below), whose sum is σ = 88983014400. Its totient is φ = 44391776000.

The previous prime is 66662435573. The next prime is 66662435611. The reversal of 66662435607 is 70653426666.

It is a cyclic number.

It is not a de Polignac number, because 66662435607 - 2¹¹ = 66662433559 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 66662435607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66662435677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14974732 + ... + 14979182.

It is an arithmetic number, because the mean of its divisors is an integer number (5561438400).

Almost surely, 2^66662435607 is an apocalyptic number.

66662435607 is a deficient number, since it is larger than the sum of its proper divisors (22320578793).

66662435607 is a wasteful number, since it uses less digits than its factorization.

66662435607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8934.

The product of its (nonzero) digits is 6531840, while the sum is 51.

The spelling of 66662435607 in words is "sixty-six billion, six hundred sixty-two million, four hundred thirty-five thousand, six hundred seven".