648969765 has 8 divisors (see below), whose sum is σ = 1038351648. Its totient is φ = 346117200.

The previous prime is 648969709. The next prime is 648969767. The reversal of 648969765 is 567969846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 648969765 - 2⁷ = 648969637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 648969699 and 648969708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648969767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21632311 + ... + 21632340.

It is an arithmetic number, because the mean of its divisors is an integer number (129793956).

Almost surely, 2^648969765 is an apocalyptic number.

It is an amenable number.

648969765 is a deficient number, since it is larger than the sum of its proper divisors (389381883).

648969765 is a wasteful number, since it uses less digits than its factorization.

648969765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43264659.

The product of its digits is 19595520, while the sum is 60.

The square root of 648969765 is about 25474.8849850201. The cubic root of 648969765 is about 865.7812070056.

The spelling of 648969765 in words is "six hundred forty-eight million, nine hundred sixty-nine thousand, seven hundred sixty-five".