648762812 has 6 divisors (see below), whose sum is σ = 1135334928. Its totient is φ = 324381404.

The previous prime is 648762811. The next prime is 648762827. The reversal of 648762812 is 218267846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648762811) 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 as a sum of consecutive naturals, namely, 81095348 + ... + 81095355.

It is an arithmetic number, because the mean of its divisors is an integer number (189222488).

Almost surely, 2^648762812 is an apocalyptic number.

It is an amenable number.

648762812 is a deficient number, since it is larger than the sum of its proper divisors (486572116).

648762812 is a wasteful number, since it uses less digits than its factorization.

648762812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162190707 (or 162190705 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 648762812 is about 25470.8227585997. The cubic root of 648762812 is about 865.6891662166.

The spelling of 648762812 in words is "six hundred forty-eight million, seven hundred sixty-two thousand, eight hundred twelve".