648996759 has 8 divisors (see below), whose sum is σ = 961476720. Its totient is φ = 432664488.

The previous prime is 648996707. The next prime is 648996779. The reversal of 648996759 is 957699846.

It is a happy number.

It is not a de Polignac number, because 648996759 - 2⁷ = 648996631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 648996696 and 648996705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648996779) 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, 12018432 + ... + 12018485.

It is an arithmetic number, because the mean of its divisors is an integer number (120184590).

Almost surely, 2^648996759 is an apocalyptic number.

648996759 is a deficient number, since it is larger than the sum of its proper divisors (312479961).

648996759 is a wasteful number, since it uses less digits than its factorization.

648996759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24036926 (or 24036920 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The square root of 648996759 is about 25475.4147954454. The cubic root of 648996759 is about 865.7932109412.

The spelling of 648996759 in words is "six hundred forty-eight million, nine hundred ninety-six thousand, seven hundred fifty-nine".