648914445 has 24 divisors (see below), whose sum is σ = 1126019232. Its totient is φ = 345708000.

The previous prime is 648914423. The next prime is 648914459. The reversal of 648914445 is 544419846.

648914445 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 648914445 - 2⁶ = 648914381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 648914445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36270 + ... + 51120.

It is an arithmetic number, because the mean of its divisors is an integer number (46917468).

Almost surely, 2^648914445 is an apocalyptic number.

It is an amenable number.

648914445 is a deficient number, since it is larger than the sum of its proper divisors (477104787).

648914445 is a wasteful number, since it uses less digits than its factorization.

648914445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15833 (or 15830 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 648914445 is about 25473.7991866153. The cubic root of 648914445 is about 865.7566057684.

The spelling of 648914445 in words is "six hundred forty-eight million, nine hundred fourteen thousand, four hundred forty-five".