648787263 has 16 divisors (see below), whose sum is σ = 879083520. Its totient is φ = 425546784.

The previous prime is 648787261. The next prime is 648787283. The reversal of 648787263 is 362787846.

It is not a de Polignac number, because 648787263 - 2¹ = 648787261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648787261) 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 15 ways as a sum of consecutive naturals, for example, 64770 + ... + 74112.

It is an arithmetic number, because the mean of its divisors is an integer number (54942720).

Almost surely, 2^648787263 is an apocalyptic number.

648787263 is a deficient number, since it is larger than the sum of its proper divisors (230296257).

648787263 is a wasteful number, since it uses less digits than its factorization.

648787263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9718.

The product of its digits is 2709504, while the sum is 51.

The square root of 648787263 is about 25471.3027346463. The cubic root of 648787263 is about 865.7000416344.

The spelling of 648787263 in words is "six hundred forty-eight million, seven hundred eighty-seven thousand, two hundred sixty-three".