648217226 has 8 divisors (see below), whose sum is σ = 972501024. Its totient is φ = 324050220.

The previous prime is 648217181. The next prime is 648217231. The reversal of 648217226 is 622712846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 648217226.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13670 + ... + 38513.

It is an arithmetic number, because the mean of its divisors is an integer number (121562628).

Almost surely, 2^648217226 is an apocalyptic number.

648217226 is a deficient number, since it is larger than the sum of its proper divisors (324283798).

648217226 is a wasteful number, since it uses less digits than its factorization.

648217226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58396.

The product of its digits is 64512, while the sum is 38.

The square root of 648217226 is about 25460.1104867988. The cubic root of 648217226 is about 865.4464270930.

The spelling of 648217226 in words is "six hundred forty-eight million, two hundred seventeen thousand, two hundred twenty-six".