648305276 has 6 divisors (see below), whose sum is σ = 1134534240. Its totient is φ = 324152636.

The previous prime is 648305267. The next prime is 648305293. The reversal of 648305276 is 672503846.

It is a happy number.

648305276 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81038156 + ... + 81038163.

It is an arithmetic number, because the mean of its divisors is an integer number (189089040).

Almost surely, 2^648305276 is an apocalyptic number.

It is an amenable number.

648305276 is a deficient number, since it is larger than the sum of its proper divisors (486228964).

648305276 is a wasteful number, since it uses less digits than its factorization.

648305276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162076323 (or 162076321 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 648305276 is about 25461.8396036107. The cubic root of 648305276 is about 865.4856110295.

The spelling of 648305276 in words is "six hundred forty-eight million, three hundred five thousand, two hundred seventy-six".