648606747 has 16 divisors (see below), whose sum is σ = 869627520. Its totient is φ = 430003200.

The previous prime is 648606733. The next prime is 648606773. The reversal of 648606747 is 747606846.

It is a happy number.

648606747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 648606747 - 2⁴ = 648606731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 648606696 and 648606705.

It is not an unprimeable number, because it can be changed into a prime (648606727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636004 + ... + 637022.

It is an arithmetic number, because the mean of its divisors is an integer number (54351720).

Almost surely, 2^648606747 is an apocalyptic number.

648606747 is a deficient number, since it is larger than the sum of its proper divisors (221020773).

648606747 is a wasteful number, since it uses less digits than its factorization.

648606747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994.

The product of its (nonzero) digits is 1354752, while the sum is 48.

The square root of 648606747 is about 25467.7589709028. The cubic root of 648606747 is about 865.6197445358.

Subtracting 648606747 from its reverse (747606846), we obtain a palindrome (99000099).

The spelling of 648606747 in words is "six hundred forty-eight million, six hundred six thousand, seven hundred forty-seven".