648898922 has 16 divisors (see below), whose sum is σ = 1112726400. Its totient is φ = 278017488.

The previous prime is 648898889. The next prime is 648898927. The reversal of 648898922 is 229898846.

It is not an unprimeable number, because it can be changed into a prime (648898927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83048 + ... + 90524.

It is an arithmetic number, because the mean of its divisors is an integer number (69545400).

Almost surely, 2^648898922 is an apocalyptic number.

648898922 is a deficient number, since it is larger than the sum of its proper divisors (463827478).

648898922 is a wasteful number, since it uses less digits than its factorization.

648898922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13685.

The product of its digits is 3981312, while the sum is 56.

The square root of 648898922 is about 25473.4944991848. The cubic root of 648898922 is about 865.7497023175.

The spelling of 648898922 in words is "six hundred forty-eight million, eight hundred ninety-eight thousand, nine hundred twenty-two".