647254790017 has 8 divisors (see below), whose sum is σ = 721119457152. Its totient is φ = 575894010000.

The previous prime is 647254790003. The next prime is 647254790051. The reversal of 647254790017 is 710097452746.

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 647254790017 - 2⁷ = 647254789889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647254790057) 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, 625971234 + ... + 625972267.

It is an arithmetic number, because the mean of its divisors is an integer number (90139932144).

Almost surely, 2^647254790017 is an apocalyptic number.

It is an amenable number.

647254790017 is a deficient number, since it is larger than the sum of its proper divisors (73864667135).

647254790017 is a wasteful number, since it uses less digits than its factorization.

647254790017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251943559.

The product of its (nonzero) digits is 2963520, while the sum is 52.

The spelling of 647254790017 in words is "six hundred forty-seven billion, two hundred fifty-four million, seven hundred ninety thousand, seventeen".