648769048 has 8 divisors (see below), whose sum is σ = 1216441980. Its totient is φ = 324384520.

The previous prime is 648769039. The next prime is 648769049. The reversal of 648769048 is 840967846.

It is a happy number.

648769048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 648768986 and 648769004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648769049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40548058 + ... + 40548073.

Almost surely, 2^648769048 is an apocalyptic number.

It is an amenable number.

648769048 is a deficient number, since it is larger than the sum of its proper divisors (567672932).

648769048 is a wasteful number, since it uses less digits than its factorization.

648769048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81096137 (or 81096133 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 52.

The square root of 648769048 is about 25470.9451728828. The cubic root of 648769048 is about 865.6919399167.

The spelling of 648769048 in words is "six hundred forty-eight million, seven hundred sixty-nine thousand, forty-eight".