66746307297 has 8 divisors (see below), whose sum is σ = 91865885440. Its totient is φ = 43062133680.

The previous prime is 66746307289. The next prime is 66746307311. The reversal of 66746307297 is 79270364766.

It is a happy number.

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

It is not a de Polignac number, because 66746307297 - 2³ = 66746307289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66746307217) 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, 358851022 + ... + 358851207.

It is an arithmetic number, because the mean of its divisors is an integer number (11483235680).

Almost surely, 2^66746307297 is an apocalyptic number.

It is an amenable number.

66746307297 is a deficient number, since it is larger than the sum of its proper divisors (25119578143).

66746307297 is a wasteful number, since it uses less digits than its factorization.

66746307297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717702263.

The product of its (nonzero) digits is 16003008, while the sum is 57.

The spelling of 66746307297 in words is "sixty-six billion, seven hundred forty-six million, three hundred seven thousand, two hundred ninety-seven".