648836284 has 6 divisors (see below), whose sum is σ = 1135463504. Its totient is φ = 324418140.

The previous prime is 648836281. The next prime is 648836303. The reversal of 648836284 is 482638846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648836281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81104532 + ... + 81104539.

Almost surely, 2^648836284 is an apocalyptic number.

It is an amenable number.

648836284 is a deficient number, since it is larger than the sum of its proper divisors (486627220).

648836284 is a wasteful number, since it uses less digits than its factorization.

648836284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162209075 (or 162209073 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 49.

The square root of 648836284 is about 25472.2649954809. The cubic root of 648836284 is about 865.7218445763.

The spelling of 648836284 in words is "six hundred forty-eight million, eight hundred thirty-six thousand, two hundred eighty-four".