66707406737 has 8 divisors (see below), whose sum is σ = 67162265856. Its totient is φ = 66252927312.

The previous prime is 66707406697. The next prime is 66707406757. The reversal of 66707406737 is 73760470766.

It is a happy number.

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 66707406737 - 2⁸ = 66707406481 is a prime.

It is a super-3 number, since 3×66707406737³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66707406757) 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 7 ways as a sum of consecutive naturals, for example, 262208 + ... + 449630.

It is an arithmetic number, because the mean of its divisors is an integer number (8395283232).

Almost surely, 2^66707406737 is an apocalyptic number.

It is an amenable number.

66707406737 is a deficient number, since it is larger than the sum of its proper divisors (454859119).

66707406737 is a wasteful number, since it uses less digits than its factorization.

66707406737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189847.

The product of its (nonzero) digits is 6223392, while the sum is 53.

The spelling of 66707406737 in words is "sixty-six billion, seven hundred seven million, four hundred six thousand, seven hundred thirty-seven".