66885206707 has 8 divisors (see below), whose sum is σ = 73522671552. Its totient is φ = 60340573800.

The previous prime is 66885206701. The next prime is 66885206719. The reversal of 66885206707 is 70760258866.

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

It is a cyclic number.

It is not a de Polignac number, because 66885206707 - 2³ = 66885206699 is a prime.

It is a super-4 number, since 4×66885206707⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is not an unprimeable number, because it can be changed into a prime (66885206701) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23206473 + ... + 23209354.

It is an arithmetic number, because the mean of its divisors is an integer number (9190333944).

Almost surely, 2^66885206707 is an apocalyptic number.

66885206707 is a deficient number, since it is larger than the sum of its proper divisors (6637464845).

66885206707 is a wasteful number, since it uses less digits than its factorization.

66885206707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46415969.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 66885206707 in words is "sixty-six billion, eight hundred eighty-five million, two hundred six thousand, seven hundred seven".