647670216737 has 8 divisors (see below), whose sum is σ = 651108317760. Its totient is φ = 644239748880.

The previous prime is 647670216701. The next prime is 647670216763. The reversal of 647670216737 is 737612076746.

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 647670216737 - 2⁸ = 647670216481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647670416737) 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, 1738103 + ... + 2077580.

It is an arithmetic number, because the mean of its divisors is an integer number (81388539720).

Almost surely, 2^647670216737 is an apocalyptic number.

It is an amenable number.

647670216737 is a deficient number, since it is larger than the sum of its proper divisors (3438101023).

647670216737 is a wasteful number, since it uses less digits than its factorization.

647670216737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3816583.

The product of its (nonzero) digits is 12446784, while the sum is 56.

The spelling of 647670216737 in words is "six hundred forty-seven billion, six hundred seventy million, two hundred sixteen thousand, seven hundred thirty-seven".