648387147761 has 8 divisors (see below), whose sum is σ = 670756941120. Its totient is φ = 626018128848.

The previous prime is 648387147643. The next prime is 648387147773. The reversal of 648387147761 is 167741783846.

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 648387147761 - 2¹⁴ = 648387131377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 648387147694 and 648387147703.

It is not an unprimeable number, because it can be changed into a prime (648387147461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1889900 + ... + 2206466.

It is an arithmetic number, because the mean of its divisors is an integer number (83844617640).

Almost surely, 2^648387147761 is an apocalyptic number.

It is an amenable number.

648387147761 is a deficient number, since it is larger than the sum of its proper divisors (22369793359).

648387147761 is a wasteful number, since it uses less digits than its factorization.

648387147761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387223.

The product of its digits is 37933056, while the sum is 62.

The spelling of 648387147761 in words is "six hundred forty-eight billion, three hundred eighty-seven million, one hundred forty-seven thousand, seven hundred sixty-one".