648855422 has 16 divisors (see below), whose sum is σ = 1055672352. Its totient is φ = 297895680.

The previous prime is 648855349. The next prime is 648855437. The reversal of 648855422 is 224558846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231338 + ... + 234125.

It is an arithmetic number, because the mean of its divisors is an integer number (65979522).

Almost surely, 2^648855422 is an apocalyptic number.

648855422 is a deficient number, since it is larger than the sum of its proper divisors (406816930).

648855422 is a wasteful number, since it uses less digits than its factorization.

648855422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465523.

The product of its digits is 614400, while the sum is 44.

The square root of 648855422 is about 25472.6406562021. The cubic root of 648855422 is about 865.7303562364.

It can be divided in two parts, 64885 and 5422, that added together give a palindrome (70307).

The spelling of 648855422 in words is "six hundred forty-eight million, eight hundred fifty-five thousand, four hundred twenty-two".