66706703707 has 8 divisors (see below), whose sum is σ = 76238431200. Its totient is φ = 57175525824.

The previous prime is 66706703689. The next prime is 66706703711. The reversal of 66706703707 is 70730760766.

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 66706703707 - 2⁷ = 66706703579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66706703807) 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, 167919 + ... + 402007.

It is an arithmetic number, because the mean of its divisors is an integer number (9529803900).

Almost surely, 2^66706703707 is an apocalyptic number.

66706703707 is a deficient number, since it is larger than the sum of its proper divisors (9531727493).

66706703707 is a wasteful number, since it uses less digits than its factorization.

66706703707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274805.

The product of its (nonzero) digits is 1555848, while the sum is 49.

The spelling of 66706703707 in words is "sixty-six billion, seven hundred six million, seven hundred three thousand, seven hundred seven".