648782826 has 8 divisors (see below), whose sum is σ = 1297565664. Its totient is φ = 216260940.

The previous prime is 648782807. The next prime is 648782857. The reversal of 648782826 is 628287846.

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

648782826 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54065230 + ... + 54065241.

It is an arithmetic number, because the mean of its divisors is an integer number (162195708).

Almost surely, 2^648782826 is an apocalyptic number.

648782826 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648782826 is a wasteful number, since it uses less digits than its factorization.

648782826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108130476.

The product of its digits is 2064384, while the sum is 51.

The square root of 648782826 is about 25471.2156364788. The cubic root of 648782826 is about 865.6980681473.

The spelling of 648782826 in words is "six hundred forty-eight million, seven hundred eighty-two thousand, eight hundred twenty-six".