648864051 has 16 divisors (see below), whose sum is σ = 955752960. Its totient is φ = 388271520.

The previous prime is 648864049. The next prime is 648864089. The reversal of 648864051 is 150468846.

648864051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 648864051 - 2¹ = 648864049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 648863994 and 648864012.

It is not an unprimeable number, because it can be changed into a prime (648864451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121840 + ... + 127053.

It is an arithmetic number, because the mean of its divisors is an integer number (59734560).

Almost surely, 2^648864051 is an apocalyptic number.

648864051 is a deficient number, since it is larger than the sum of its proper divisors (306888909).

648864051 is a wasteful number, since it uses less digits than its factorization.

648864051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248986.

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 648864051 is about 25472.8100334455. The cubic root of 648864051 is about 865.7341939450.

The spelling of 648864051 in words is "six hundred forty-eight million, eight hundred sixty-four thousand, fifty-one".